Data and Statistics Review

What is the median?

• 62

• 58

• 66

• 60

What is the interquartile range (IQR) for the dot plot below?

• 20

• 35

• 15

• 70

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

• 11

• 13

• 5

• 8

What is the range of the data shown in the stem and leaf plot?

• 40

• 56

• 136

• 96

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 line graph illustrates daily temperatures over a week. If the line peaks at 90°F on Friday, what does this mean?

• The average temperature for the week is 90°F.

• The temperature rose to 90°F on Friday.

• Friday was the only warm day.

• The temperature was 90°F all week.

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 scatter plot shows the relationship between age and height of children. If older children are generally higher on the y-axis, what does this imply?

• Older children are usually shorter.

• Height decreases with age.

• Older children are usually taller.

• Age and height are not related.

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 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.