Data and Statistics Review

True or False
The interquartile range is the difference between the upper quartile (Q3) and the lower quartile (Q1).

• True

• False

Calculate the range of the following 2, 5, 8, 3, 13, 5

• 11

• 13

• 5

• 8

Find the range of the data.

63, 71, 65, 66, 87, 53

• 32

• 33

• 34

• 35

Find the median for the set of numbers:

23, 37, 11, 58, 13, 45

• 30

• 23

• 37

• 28

A pie chart represents the types of books read by a class. If 30% of the chart is dedicated to fiction books, what does this percentage signify?

• 30% of the books are non-fiction.

• 30% of the students dislike fiction.

• 30% of the books read are fiction.

• Each student reads 30 fiction books.

A histogram shows the distribution of students' ages in a school. If the 10-12 age group has the highest frequency, what does this tell us?

• Students aged 10-12 are the youngest.

• Most students are aged between 10 and 12.

• No students are older than 12.

• Students aged 10-12 are the majority.

A histogram displays the number of hours students spend on homework each week. If the 0-1 hour range has the smallest bar, what does this suggest?

• No students spend 0-1 hour on homework.

• Few students spend only 0-1 hour on homework each week.

• Most students spend 0-1 hour on homework.

• The data is incorrect.

A scatter plot shows the relationship between hours studied and test scores. If there is a trend line going upwards, what does this suggest?

• As study hours decrease, test scores increase.

• As study hours increase, test scores decrease.

• As study hours increase, test scores increase.

• There is no relationship between study hours and test scores.

A histogram shows the scores on a math test. If the 70-79 range has the tallest bar, what does this indicate?

• Most students scored between 70 and 79.

• The test was out of 70-79 points.

• One student scored between 70 and 79.

• The average score was between 70 and 79.

Find the interquartile range using the following.
Minimum:  1
Q1:  3
Median:  5
Q3:  7
Maximum:  9

• 8

• 4

• 5

• 10