Question 1

Which of the following best describes the shape of the distribution in the first image (bell-shaped curve)?

Accepted Answer

Symmetric and unimodal

Question 2

The histogram of 'Hours of TV per Week' (second image) is best described as:

Accepted Answer

Skewed to the right

Question 3

In the third image ('Grade out of 32'), the distribution is:

Accepted Answer

Skewed to the left

Question 4

Which of the following best describes the distribution in the fourth image (two peaks)?

Accepted Answer

Bimodal

Question 5

The histogram of 'Weight (pounds)' (fifth image) shows an outlier. Which value is most likely the outlier?

Accepted Answer

$$1200$$

Question 6

In the 'Audience Movie Ratings' histogram (sixth image), what is the best estimate for the center (typical value) of the distribution?

Accepted Answer

$$6$$

Question 7

Which of the following best describes the shape of the 'Audience Movie Ratings' histogram (sixth image)?

Accepted Answer

Symmetric and unimodal

Question 8

Comparing the 'Men' and 'Women' soccer goal histograms (seventh and eighth images), which group has an outlier on the right?

Accepted Answer

Women

Question 9

Which family (ninth or tenth image) has greater variability in heights?

Accepted Answer

Family Two

Question 10

A distribution with a long tail to the left is described as:

Accepted Answer

Skewed to the left

Question 11

If a histogram is very narrow, what does this indicate about the data's variability?

Accepted Answer

Low variability

Question 12

Which of the following is NOT a component used to describe a numerical distribution?

Accepted Answer

Color

Question 13

A histogram with bars of roughly equal height across all values is best described as:

Accepted Answer

Uniform

Question 14

Which scenario is most likely to produce a right-skewed distribution?

Accepted Answer

Income of USA residents

Question 15

If a distribution is symmetric and unimodal, which measure of center is most appropriate?

Accepted Answer

Mean

Question 16

Which of the following best describes an outlier?

Accepted Answer

A value that is much larger or smaller than the rest of the data

Question 17

A distribution with two distinct peaks is called:

Accepted Answer

Bimodal

Question 18

Which of the following is a real-world example of a symmetric and unimodal distribution?

Accepted Answer

SAT scores

Question 19

If all data values in a set are the same, what is the variability?

Accepted Answer

Zero

Question 20

Which of the following best describes the distribution of the last digit of Social Security numbers for a random sample of students?

Accepted Answer

Uniform

Summarizing Important Features of a Numerical Distribution

Study Guide - Practice Questions