WPC 300 EXAM QUESTIONS WITH REVISED ANSWERS (ALREADY GRADED A+)
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Course
WPC 300
Institution
WPC 300
WPC 300 EXAM QUESTIONS WITH REVISED ANSWERS (ALREADY GRADED A+)
Which of the following is an application of machine learning - Answer- Predict what words or phrases will be typed next
Which of the following techniques would you use to find out what additional products are being bought by the cu...
WPC 300 EXAM QUESTIONS WITH
REVISED ANSWERS (ALREADY
GRADED A+)
Which of the following is an application of machine learning - Answer- Predict what
words or phrases will be typed next
Which of the following techniques would you use to find out what additional products are
being bought by the customer in conjunction with other products - Answer- Market
basket analysis
Google's self driving car is an example of ____ in action - Answer- Artificial Intelligence
Which of the following is NOT an example of the application of an artificial neural
network? - Answer- Market segmentation
A manager wishes to predict the annual cost (y) of an automobile based on the # of
miles (x).
y= $1000 + 0.10x.
If a car is driven 15000 miles in a year, the annual cost of the car - Answer- $2500
Which of the following is an example of primary data? - Answer- customer interview
data generated by our organization
Analytics is the discovery, interpretation and communication of meaningful patterns in -
Answer- data
An ideal experimental study includes which of the following design characteristics -
Answer- Double blind administration and randomized group allocation
In a cluster analysis, the distance between the clusters should be: - Answer- Maximized
Modern cars have windshield wipers, which turn on automatically and based on sensing
the level of rain, the speed of the wipers is determined by the car's software systems.
This is performed using ______ modeling - Answer- prescriptive
When sample size increases - Answer- Confidence interval decreases
, Which of the following is not a best practice in A/B testing for a website landing page -
Answer- You should test 10 different elements of the landing page at once
What kinds of bias could show up when collecting data ? - Answer- All of the above
Which of the following describes the standard deviation? - Answer- It is the square root
of the variance
When two variables are highly positively correlated the correlation coefficient will be ___
- Answer- Close to 1
According to statistical notation, what does
∑ stand for? - Answer- to act as a summation operator to represent sample statistics
The ____ is the observation that occurs most frequently - Answer- mode
The difference between the first and third quartiles is referred to as the - Answer-
Interquartile range
The ____ is the observation that occurs most frequently - Answer- mode
The difference between the first and the third quartiles is referred as - Answer-
Interquartile range
Which of the following is an example of a measure of dispersion - Answer- Variance
Which of the describes a positively skewed histogram - Answer- a histogram that tailes
off toward the right
Which of the following is true for a median - Answer- For an even number of
observations the median is the two numbers
Which of the following is an example of a SAMPLE - Answer- The number of IT
employees out of all employees working in an office of Google
For a normal distribution mean is to _____ to median - Answer- equal
When sample size increases.... - Answer- Confidence interval DECREASES
Which of the following proposition describes an existing theory or belief - Answer- Null
Hypothesis
Which of the following is a Type 1 error - Answer- The null hypothesis is actually true,
but the hypothesis test incorrectly rejects it
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