data mining uses the following techniques (select all that applies) group of answer choices hypothesis testing statistical modeling search algorithms machine learning etl technology
Answers
knowledge extraction from data It is one of the processes in the procedure for discovering new knowledge. It is a computational process that combines techniques from machine learning, statistics, and database architecture to find patterns in massive data sets.
What four tasks does data mining perform?Data mining mostly serves the following four purposes: prediction capability. the method of extracting patterns from data utilizing a number of variables to forecast other variables with unknown types or values. The process of searching a database for a crucial feature of data.
What methods of data mining are there?Some data mining techniques include classification, clustering, association, data cleaning, and data visualization.
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Related Questions
state 5 general rules for cleat wiring
Answers
2. The conductor used is to be of such a size that it may carry load current safely.
3. The conductors installed are to be safe in all respects.
4. Every sub-circuit is to be connected to a distribution fuse board.
5. Every line (phase or positive) is to be protected by a fuse of suitable rating as per requirements.
Which of the following policy actions could the federal reserve use to combat inflation
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\( \huge{ \underbrace{ \overbrace{OPTIONS}}}\)
\( \huge{ \underbrace{ \overbrace{PlEASE}}}\)
When traveling at higher speeds (40 mph or faster), the most fuel efficient way to keep the car cool is to
Answers
Answer:
When traveling at higher speeds (40 mph or faster), the most fuel-efficient way to keep the car cool is to follow these tips:
1. Use the vehicle's ventilation system: Instead of relying on air conditioning, use the car's ventilation system to circulate fresh air from outside. This helps to cool down the interior without putting extra load on the engine, thus saving fuel.
2. Close windows and sunroofs: To reduce wind resistance and drag, close all windows and sunroofs while driving at higher speeds. Open windows create drag, which can increase fuel consumption.
3. Park in the shade: Whenever possible, park your car in a shaded area to avoid excessive heating when it's not in use. This can help keep the car cooler and reduce the need for extra cooling when you start driving.
4. Use reflective sunshades or window tinting: Use reflective sunshades on your windshield and window tinting on side windows to reduce the amount of heat entering the car. This can help keep the interior cooler, reducing the need for excessive cooling while driving.
5. Maintain your vehicle: Regular maintenance, such as checking and replacing coolant, inspecting the radiator, and ensuring proper functioning of the engine cooling system, can help keep your car running efficiently and prevent overheating.
6. Plan your trips strategically: If possible, try to avoid driving during the hottest part of the day. By planning your trips to avoid peak temperatures, you can reduce the strain on your vehicle's cooling system and minimize the need for excessive cooling.
Remember that these tips are specifically focused on keeping the car cool while maintaining fuel efficiency at higher speeds. In certain circumstances, such as extremely hot weather, using the air conditioning sparingly may be necessary for passenger comfort, but it will increase fuel consumption.
the voltage valve at which a zirconia O2S switches from rich to lean and lean to rich is
A) 0.5v (500mv)
B) 0.45v (450mv)
C) 0.25v (250mv)
D) 0.90v (900)
Answers
Suppose that 42\%42%42, percent of students of a high school play video games at least once a month. The computer programming club takes an SRS of 303030 students from the population of 792792792 students at the school and finds that 40\%40%40, percent of students sampled play video games at least once a month. The club plans to take more samples like this. Let \hat p p ^ p, with, hat, on top represent the proportion of a sample of 303030 students who play video games at least once a month. What are the mean and standard deviation of the sampling distribution of \hat p p ^ p, with, hat, on top? Choose 1 answer: Choose 1 answer: (Choice A) A \begin{aligned} \mu_{\hat p}&=0.42 \\\\ \sigma_{\hat p}&=\sqrt{\dfrac{0.42\left(0.58\right)}{30}} \end{aligned} μ p ^ σ p ^ =0.42 = 30 0.42(0.58) (Choice B) B \begin{aligned} \mu_{\hat p}&=(30)(0.42) \\\\ \sigma_{\hat p}&=\sqrt{30(0.42)(0.58)} \end{aligned} μ p ^ σ p ^ =(30)(0.42) = 30(0.42)(0.58) (Choice C) C \begin{aligned} \mu_{\hat p}&=(30)(0.4) \\\\ \sigma_{\hat p}&=\sqrt{30(0.4)(0.6)} \end{aligned} μ p ^ σ p ^ =(30)(0.4) = 30(0.4)(0.6) (Choice D) D \begin{aligned} \mu_{\hat p}&=0.4 \\\\ \sigma_{\hat p}&=\sqrt{\dfrac{0.4\left(0.6\right)}{30}} \end{aligned} μ p ^ σ p ^ =0.4 = 30 0.4(0.6)
Answers
Answer:
its A, first choice on khan
Explanation:
Easily find HTML color codes for your website using our color picker, color chart and HTML color names with Hex color codes, RGB and HSL values.
Answers
Utilizing color picker tools, color charts, and HTML color names with Hex, RGB, and HSL values will simplify the process of finding the right color codes for your website.
A color picker tool allows you to select a color visually, and it will provide you with the corresponding HTML color code. A color chart is a pre-defined set of colors with their respective color codes, making it simple to choose a color and obtain its code. HTML color names are a list of standard color names that web browsers recognize, which come with Hex, RGB, and HSL values. Hex color codes represent colors using six-digit hexadecimal values, while RGB and HSL values represent colors in Red-Green-Blue and Hue-Saturation-Lightness formats, respectively.
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Why are most products the result of an innovation instead of an invention?
Answers
Answer:
they were updated rather than being created
Answer:
Invention is about creating something new, while innovation introduces the concept of “use” of an idea or method.
Ball valves allow or prevent flow with a one-quarter turn of their handles in much the same way as _______ valves
Answers
Answer: quarter turn
Explanation: There are two basic types of valves ball valves and quarter turn valves or unblocks the hole, either allowing or preventing fluid flow.
A tiger cub has a pattern of stripes on it for that is similar to that of his parents where are the instructions stored that provide information for a tigers for a pattern
Answers
probably in it's chromosomes
In a fixed orifice tube a/c system, the low-pressure cycling switch is typically located in the low pressure line or on the:______.
Answers
In a fixed orifice tube a/c system, the low-pressure cycling switch is typically located in the low-pressure line or on the accumulator.
The orifice tube is one of the components in an air conditioning system that serves as a metering device.
It's a slim, cylindrical tube that is commonly made of brass or aluminum.
The orifice tube is located between the condenser and the evaporator,
where it acts as a choke point for the high-pressure liquid refrigerant.
The tube's small orifice restricts the flow of refrigerant, causing it to expand and cool as it passes through it.
A low-pressure cycling switch is a device that is used to monitor the low side of an air conditioning system.
It serves as a safety feature that prevents the system from being damaged due to low refrigerant levels.
The switch is typically installed in the low-pressure line or on the accumulator, depending on the design of the system.
The accumulator, also known as a receiver-drier, is a component in the air conditioning system that is used to store excess refrigerant.
It also removes moisture from the refrigerant, which can damage the system if it is not removed.
The low-pressure cycling switch is usually located on the accumulator,
which is located between the evaporator and the compressor.
In summary, the low-pressure cycling switch is typically located in the low-pressure line or on the accumulator in a fixed orifice tube a/c system.
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which is one of the most important steps to do before you go into an interview ?
Research the company
Tell your current boss
Buy a new dressy outfit
Finish school
Answers
Answer:
Research the company
Explanation:
It is a good idea to find out information about the company you are interviewing. Among other things, this will help you decide if you actually want to work for that company.
Telling your current boss can be risky to your job. A new outfit may be helpful for certain positions--especially those where manner of dress is important. Finishing school may or may not be an important requirement for the position you're seeking. Your company research will tell you.
Researching the company is one of the most important steps to take.
you cant mix conventional and synthetic oil fact or myth
Answers
Answer:
Explanation:
myth
Besides HEV and EVmotor systems themselves what other systems may use high voltage?
Answers
Besides the HEV and EV motor systems themselves, the other systems that may use high voltage are:
1. Air conditioning compressor.
4. Electric water pump.
What is the systems?In a hybrid electric vehicle (HEV) or an electric vehicle (EV), high voltage is used in certain systems to increase the efficiency and improve the performance of the vehicle.
The air conditioning compressor, for example, may use a high voltage system to power its electric motor, which in turn drives the compressor. By using high voltage, the air conditioning system can operate more efficiently and use less energy, improving the overall efficiency of the vehicle.
Similarly, an electric water pump in an HEV or EV may also use high voltage to improve its performance. The high voltage system allows the pump to operate more efficiently and use less energy, which can help to conserve the vehicle's battery power and improve its range.
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See transcribed text below
Besides the HEV and EV motor systems themselves, what other systems may use high voltage (check all that apply)?
Air conditioning compressor.
Electric power steering.
Auxiliary battery.
Electric water pump.
in the 2010 toyota prius, a boost converter is used to step up the output voltage of the battery (assumed to have constant voltage of 200 v) to the dc-bus voltage level of 250 v. assuming the converter to be ideal, what is the duty cycles needed to do this at steady-state?
Answers
Boost converters can also supply power to smaller-scale equipment, including portable lighting systems.
A boost converter can increase the voltage from a single 1.5 V alkaline cell to provide the lamp with the 3.3 V that a white LED generally needs to emit light. High-frequency power conversion circuits known as DC-DC converters use inductors, transformers, and capacitors to reduce switching noise and produce regulated DC voltages. Even with fluctuating input voltages and output currents, closed feedback loops maintain constant voltage output. To "step-up" an input voltage to a higher level, needed by a load, the boost converter is utilized. By holding energy in an inductor and delivering it to the load at a greater voltage, this special feature is made possible.
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The manager of a small post office is concerned that the growing...
The manager of a small post office is concerned that the growing township is overloading the one-window service being offered. Sample data are collected on 100 individuals who arrive for service:
TIME BETWEEN
ARRIVALS (MINUTES) FREQUENCY
1 5
2 32
3 35
4 19
5 9
100
SERVICE TIME
(MINUTES) FREQUENCY
1.0 12
1.5 21
2.0 36
2.5 19
3.0 7
3.5 5
100
Using the following random number sequence, simulate six arrivals (Hint: Use random number set from 00 to 99.)
RN: 93, 5, 53, 20, 10, 45, 67, 55, 92, 75, 41, 46, 58, 82, 20, 97, 13, 36
a. Average customer waiting time, in minutes (Round your answer to 4 decimal places.)
Average customer waiting time minutes
b. Average percent idle time for clerks.
Average percent idle time
Answers
Answer:
its b
Explanation:
3. gravity-induced stress in a soft layer (30 pts 15 bonus pts for the last question) a soft incompressible rubber layer is attached to a rigid wall and under the action of its own gravitational force. the thickness of the rubber layer is much smaller than its lateral size. neglecting the edge effects and assuming the stress/strain in the layer is homogenous, please calculate the stress state in the rubber layer. incompressible neo-hooken model can be used to describe the mechanical behavior of the rubber. in a recent experiment, it has been observed that when the layer is soft enough, the free surface on the bottom of the layer is will not be flat anymore. instead, the bottom surface becomes undulated. can you explain the phenomenon qualitatively based on energy minimization?
Answers
Undulations in the bottom surface of a soft rubber layer under its own gravitational force can be explained qualitatively based on energy minimization, where the undulations reduce the gravitational potential energy of the layer.
When a soft rubber layer is under its own gravitational force, it deforms and experiences stress due to the weight of the material. According to the neo-Hookean model, the stress state in the rubber layer can be calculated based on the strain energy density function. The undulation on the bottom surface of the rubber layer can be explained based on energy minimization. The deformation of the rubber layer under gravity induces a curvature on the surface of the layer, which increases the strain energy of the material. The undulation phenomenon occurs due to the elastic instability of the material, where the elastic energy of the material is reduced by forming a pattern of wrinkles on the surface. This phenomenon is a result of the balance between the elastic energy and gravitational potential energy in the rubber layer.
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Results from the grain size distribution curve are used to describe the proportion of soil constituents in the sample. To describe the sample in words, use:
Answers
To describe the sample in words using the results from the grain size distribution curve and considering the proportion of soil constituents in the sample, you can follow these steps:
1. Examine the grain size distribution curve to determine the relative proportions of different soil constituents such as gravel, sand, silt, and clay in the sample.
2. Note the percentages of each soil constituent present in the sample, as indicated by the curve.
3. Combine this information to describe the sample in words. For example, if the grain size distribution curve shows 40% gravel, 30% sand, 20% silt, and 10% clay, you could describe the sample as: "This soil sample consists of 40% gravel, 30% sand, 20% silt, and 10% clay, as indicated by the grain size distribution curve."
Remember to adjust the percentages and constituents based on the actual data from your grain size distribution curve.
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An Otto cycle takes in air at a temperature of 20°C and a pressure of 100 kPa. The high temperature is 1000°C and the compression ratio is 8. The specific heat for air at constant pressure is 1.00 kJ/kg K, and the specific heat for air at constant volume is 0.716 kJ/kg-K. The mass of air in a cylinder is 0.002 kg. If the specific heats stay constant, the clearance volume is most nearly :________
(A) 90 cm
(B) 120 cm3
(C) 180 cm
(D) 210 cm
Answers
Jamal is demonstrating howto build a game in scratch to several of his friends. for the purpose of his demonstration, he wants the backdrop to continuously keep changing. what type of loop will he need to create in order to do this?
a control loop
b master loop
c forever loop
d motion loop
Answers
A type of loop which Jamal will need to create in order to make the backdrop to continuously keep changing is: C. forever loop.
What is a forever loop?A forever loop can be defined as a type of loop which comprises a sequence of instructions that are written to run continuously or endlessly, until the simulation is quitted by an end user.
This ultimately implies that, a forever loop should be created by Jamal to make the backdrop to continuously keep changing.
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Answer: C
Explanation:
To any of you who are also taking Game Design, I have respect for you.
Please show NEC article 310.10(H)
Answers
Conductors in Parallel is covered in 310.10(H). Often when working with higher ampacities, we find it to be cumbersome and expensive to keep increasing the size of the wire and conduit. The solution is often to use multiple runs that are connected to a common location on each end. Notice in the 2011 edition of the code that much of this section is highlighted gray, indicating new or revised text. The change here was that the previous code stated that you were permitted to parallel conductors 1/0 AWG and larger; however, it didn’t specifically prohibit you from paralleling smaller conductors, which was the intent and the way it was enforced in all my years of enforcement. However, that’s not what the actual language said, and ambiguous language cancause enforcement issues; therefore, in the 2011 code it was made clear that you are only allowed to parallel conductors 1/0 AWG and larger.
What unique information is collected on preincident surveys for a multistory building?
Answers
Interior command sites exists collected on preincident surveys for a multistory building
What is preincident surveys?A quality pre-incident survey presents advanced knowledge of important issues such as building construction, building layout, dangerous materials storage, fire alarm or fire suppression system credentials, and special occupancy problems. Pre-incident planning surveys exist as one of the key ways to plan for an emergency in the fire service. Pre-incident planning surveys provide firefighters and other emergency responders with critical knowledge of structures. It exists agreed that the best time to retrieve critical information exists before an emergency appears.
Pre-incident planning permits emergency responders to anticipate the resources and procedures required to meet specific demands within their jurisdictions. The complexity of today's fire protection systems, combined with changing building construction processes, makes pre-incident planning imperative.
Hence, Interior command sites exists collected on preincident surveys for a multistory building.
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Writing an excellent problem statement will not help guide you through the rest of the process and steer you towards the BEST solution. True False
Answers
Answer:
Writing an excellent problem statement will not help guide you through the rest of the process and steer you towards the BEST solution.
False
Explanation:
An excellent problem statement sets the overall tone for the rest of the engineering process, whether it be at the analysis, design, or implementation stages. This is why a problem statement must be focused, clear, and specific. An excellent problem statement contains the problem definition, method for solving the problem (the claim proposed), purpose, statement of objectives, and scope. For an excellent problem statement to be effective, it must also show the gap that is to be closed to achieve the intended objective.
true/False
1.
Around 50 percent of all sales of farm commodities are from dairy
products.
Answers
Answer:true
Explanation:
It is true that around 50 percent of all sales of farm commodities are from dairy products.
What are dairy products?Dairy products or milk products, also known as lacticinia, are milk-based foods.
Cows, water buffalo, nanny goats, and ewes are the most common dairy animals. Dairy products include common grocery store foods such as yogurt, cheese, and butter in the Western world.
Milk, yogurt, cheese, lactose-free milk, and fortified soy milk and yogurt are all part of the Dairy Group. The Dairy Group excludes milk-based foods with low calcium and a high fat content. Cream cheese, sour cream, cream, and butter are all examples of this.
Dairy products account for roughly half of all farm commodity sales.
Thus, the given statement is true.
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if a current of 5 amps flows through a resistance of 40 ohms, what is the voltage across that resistor
Answers
Answer:
200V
Explanation:
I = 5A
R = 40Ω
V = IR = (5)(40) = 200V
Assuming you determine the required section modulus of a wide flange beam is 200 in3, determine the lightest beam possible that will satisfy this condition.
Answers
Answer:
W18 * 106
Explanation:
Given that the section modulus of the wide flange beam is 200 in^3 the lightest beam possible that can satisfy the section modulus must have a section modulus ≥ 200 in^3. also the value of the section modulus must be approximately closest to 200in^3
From wide flange Beam table ( showing the section modulus )
The beam that can satisfy the condition is W18 × 106 because its section modulus ( s ) = 204 in^3
_______________ is an effective way to manage waste in a shop.
Answers
Answer:
To reduce waste.
Explanation:
A recessed luminaire bears no marking indicating that it is ""Identified for Through- Wiring."" Is it permitted to run branch-circuit conductors other than the conductors that supply the luminaire through the integral junction box on the luminaire?
Answers
Answer:
No it is not permitted
Explanation:
It is not permitted because as per NEC 410.21 policy no other conductor is allowed to be passed through integral junction box luminaries unless such conductor supply recessed luminaries.
The marking will show that the Luminaries is of the right construction or right installation to ensure that the the conductors ( in the outer boxes ) will not be exposed to temperatures greater than the conductor rating, hence the lack of marking makes it not to be permitted.
What is one of the reasons to consider implementing a blockchain solution?
Answers
Blockchain is often used often in the verification and locating of multistep transactions. One of the reasons to consider implementing a blockchain solution is the ability to work on different versions of the same data.
Blockchain solution is known to keep transactions safe, limit compliance costs, and speed up data transfer processing. It is known to back up the accuracy of the data.In Blockchain, all node can see all transactions that are taking place in the system and all will get a copy of each of them to update its data and approve it.
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What is one of the reasons to consider implementing a blockchain solution?
Options:
1.inability to track simultaneous updates by multiple users
2. ability to work on different versions of the same data
3.ability to verify that data has not been tampered with since its creation
4.inability to trace and access data of other users
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Tech A says that most electric fuel pumps are now mounted inside of the fuel tank. Tech B says that fuel flows through the center of the electric pump and is used to cool the pump. Who is correct?
Answers
Answer:
both
Explanation:
Tech A says that most electric fuel pumps are now mounted inside of the fuel tank. Tech B says that fuel flows through the center of the electric pump and is used to cool the pump. Who is correct? quizlet said so
In this case, both Technicians are right.
The electric fuel pump is a device that powers a vehicle's engine system by providing fuel.There are two classes of electric fuel pumps: external fuel pumps and in-tank fuel pumps.In modern vehicles (also in motorcycles) the electric fuel pump is now located inside the fuel tank.In conclusion, both Technicians are right.
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FILL THE BLANK.
since thermocouples produce such low voltages, they are often connected in series. this connection is referred to as a(n) _____.
Answers
Thermocouples are temperature sensors that generate a voltage when there is a difference in temperature between two junctions. However, the voltage produced by one thermocouple is usually very small - typically only a few millivolts. To increase the output voltage, multiple thermocouples can be connected together in series.
This connection of multiple thermocouples in series is referred to as a "thermopile". A thermopile consists of several thermocouples connected in series, with each thermocouple adding its small voltage to the overall output voltage. The result is a higher voltage signal that is more easily measured by instruments or controllers.
The use of a thermopile has several advantages over using a single thermocouple. First, it provides a larger voltage signal, which makes it easier to measure accurately. Second, a thermopile can be more sensitive to changes in temperature than a single thermocouple. Finally, since a thermopile generates a higher voltage signal, it can be used over longer distances without suffering from signal degradation.
In summary, connecting thermocouples in series to form a thermopile is a common technique for increasing the voltage output of these temperature sensors. This method allows for more accurate and sensitive measurements, making it useful in a wide range of applications, including industrial process control, laboratory research, and environmental monitoring.
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