Quizzes - DATA 320 7380 Introduction to Data Analytics (2242) - UMGC Learning Management System
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Quizzes - DATA 320 7380 Introduction to Data Analytics (2242) - UMGC Learning Management System
https://learn.umgc.edu/d2l/lms/quizzing/user/attempt/quiz_start_frame_auto.d2l?ou=929681&isprv=&qi=2071622&cfql=1&dnb=0&fromQB=0&inProgr…
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Question 1
5 / 5 points
Outliers found in a dataset:
Question 2
5 / 5 points
Most statistical procedures:
Question 3
5 / 5 points
When missing values are found in a dataset:
Question 4
5 / 5 points
One good way to verify the accuracy of a statistical model is to:
Question 5
5 / 5 points
All data falls into one of the following four categories:
Are seldom a problem and can be ignored.
Can seriously compromise statistics and statistical procedures.
Can have a large impact on the value of the median.
Should always be removed.
Do not care how the data is distributed
Cannot be used if the data is not normally distributed
Often assume the data is normally distributed
They should always be removed from the dataset.
They are frequently just random little data glitches.
Can be an annoying problem for analyses.
Randomly split your data into two files
Overfit the model
Underfit the model
Examine the residuals
Text, video, numbers, sound.
Numbers, audio, words, movies.
Nominal, ordinal, interval, ratio.
Current, historical, time series, text.
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QUESTION 1
salaries are normally distributed. Mrs. Smith is a teacher who has an annual salary of $60,000. What kind of z-score will Mrs.
Smith have?
Suppose teachers in a certain state earn an annual salary of $54,600, on average. The standard deviation is $10,200. The
A. Negative
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QUESTION 2
Suppose teachers in a certain state earn an annual salary of $54,600, on average. The standard deviation is $10.200. The
salaries are normally distributed. Mrs. Myers is a teacher who earns $45,000 annually. What kind of z-score will Mrs. Myers
have?
O A. Negative
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Define the equation is used to predict HSGPA from SAT?
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naining Time: 3 hours, 23 minutes, 18 seconds.
✓ Question Completion Status:
Type of Job
000 000
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O ADDITIONAL TOPICS IN TRIGONOMETRY
Finding the direction angle of a vector given in ai+bj form
Find the direction angle of the vector v =-4i-2j. That is, find the angle between 0° and 360° that v makes with the positive x-axis (measured
counterclockwise), when v is in standard position.
Do not round any intermediate computations, and round your answer to the nearest whole number.
Explanation
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Question 2
The graph of a function f(x) is given. Answer the question.
f(x)
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✓ Image(f)
✓ f(-1)
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If f(x) = 9, then x = ?
x
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a. (-4,5)
b.4
c. 0
d. (-∞, ∞ )
e. [-2,4]
f. [-5, 4]
g. [-2, 4.1]
h. Undefined
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A newspaper article discussing whether Social Security could be cut offered the information shown in the figure below. Use the information in these graphs to answer the question.
The crunch to come...
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Money paid into the system has
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Scale in billions of dollars.
11 T 1 T
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But the baby boomers
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By one government projection,
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year 2036.
Scale in billions
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35
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150
100
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Construct a truth table for the following compound statement.
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(-qv-r) A (-s V – q)
Enter your answer in the answer box and then click Check Answer.
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a.
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6/p = 5/11
the cross products property way?? idk
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