Score for this attempt:
16
out of 20
Submitted Sep 13 at 6:16pm
This attempt took 4 minutes.
Question 1
Correct!
2 / 2 pts
A researcher analyzed the results of her data and calculated
the standard deviation of scores at 3.5. What is the variance?
<br>

A researcher analyzed the results of her data and calculated the standard deviation
of scores at 3.5. What is the variance?

Question 2
Correct!
2 / 2 pts
Suppose we compute the standard deviation and find that it is
equal to 5.50. This number means that the numbers in the
sample deviate, on the average:<br>
Suppose we compute the standard deviation and find that it is equal to 5.50. This
number means that the numbers in the sample deviate, on the average:

2.25 units from the mean.
5.50 units from the two extreme scores.
Question 3
Correct!
2 / 2 pts
Sixteen college freshmen were asked to record the number of
alcoholic drinks that they typically consume in a week. Here
are their data: 2, 4, 6, 0, 1, 10, 9, 0, 6, 3, 6, 8, 5, 4, 6, 2. What is
the mean number of alcoholic drinks consumed per week?<br>
Sixteen college freshmen were asked to record the number of alcoholic drinks that
they typically consume in a week. Here are their data: 2, 4, 6, 0, 1, 10, 9, 0, 6, 3, 6,
8, 5, 4, 6, 2. What is the mean number of alcoholic drinks consumed per week?

Question 4
Correct!
2 / 2 pts
The ________ is the difference between the lowest and highest
score in the distribution.<br>
The ________ is the difference between the lowest and highest score in the

distribution.
outlier
range
variance
standard deviation

Question 5
Correct!
2 / 2 pts
Skip to question text.
Six students from a statistics class reported the number of hours of television they
watch per week. Here are their data: 8, 10, 5, 14, 3, 6. What is the standard
deviation of the number of hours of television watched per week for this sample of
six students?

Question 6
Incorrect
0 / 2 pts

If you wanted to know whether judges in your state are
typically male or female, what measure of central tendency
would you use to describe the typical judge?<br>
If you wanted to know whether judges in your state are typically male or female,
what measure of central tendency would you use to describe the typical judge?

Question 7
Correct!
2 / 2 pts
Skip to question text.
Sixteen college freshmen were asked to record the number of alcoholic drinks they
typically consume in a week. Here are their data: 2, 4, 6, 0, 1, 10, 9, 0, 6, 3, 6, 8, 5,
4, 6, 2. What is the variance of the number of alcoholic drinks consumed per
week?