Skip to Main Content
Quiz: Central Tendency, Variability, and Correlation
Due Nov 26 at 11:59pm Points 30 Questions 10
Time Limit 60 Minutes Allowed Attempts Unlimited
Instructions
Attempt History
Attempt Time Score
LATEST Attempt 1 8 minutes 27 out of 30
Correct answers are hidden.
Score for this attempt: 27 out of 30
Submitted Nov 13 at 1:23pm
This attempt took 8 minutes.
The quiz:
Covers the Textbookmaterial from Module 5: Week 5.
Contains 10 multiple-choicequestions.
Islimitedto60 minutes.
Allows unlimited attempts and the highest attempt will count towards the grade.
Is worth 20 points.
You may refer to your notes and textbooks at any time during the assessment.
Submit this assignment by 11:59 p.m. (ET) on Sunday of Module 5: Week 5.
TAKE THE QUIZ AGAIN
3 / 3 pts
Question 1
With which term is the mean synonymous?
Online
Residential
Athletics
Sign InRequest Info Apply Now Visit Us Create Guest Account
Average
Frequency
Interval
Midpoint
3 / 3 pts
Question 2
The distribution below is :
negatively skewed.
normal.
positively skewed.
rectangular.
3 / 3 pts
Question 3
In a frequency distribution of 290 scores, the mean is 99 and the
median is 86. One would expect this distribution to be:
negatively skewed.
normal.
positively skewed.
symmetrical.
3 / 3 pts
Question 4
The most dependable derived unit for measuring how far a score
varies from the mean for the group is called the:
average deviation.
quartile deviation.
standard error.
standard deviation.
3 / 3 pts
Question 5
A T-score of 35 would be the same as a z-score of:
- 3.5
- 1.5
1.5
3.5
3 / 3 pts
Question 6
Assume that a set of 90 normally distributed test scores has a
mean of 70 and a standard deviation of 10. A T-score of 0 would be
equivalent to a raw score of:
- 2.5
- 5
20
50
3 / 3 pts
Question 7
What percent of students in a distribution falls between the rst
and third quartiles?
25%
50%
75%
84%
0 / 3 pts
Question 8
Incorrect
Incorrect
The coecient of determination is used to:
compute correlations for truncated ranges.
compare the relative strength of coecients.
identify curvilinear relationships.
test correlations for causality.
3 / 3 pts
Question 9
Which of the following indicates the strongest correlation?
-.91
-.88
.75
.87
3 / 3 pts
Question 10
When a relationship between two variables is curvilinear, a linear
correlation coecient computed for each data will be:
a determination coecient.
spuriously high.
spuriously low.
truncated.
