Data & Statistics Review

A sample of students is taken from the school's A honor roll. The school estimates that there are 360 on the A honor roll. Using the sample, how many students on the A honor roll are 8th graders?

• 126

• 234

• 99

• 135

A new donut shop in town is surveying residents to determine how much they typically pay for a breakfast out.  Which of the following best describes a random sample?

• They ask patrons if the price was reasonable.

• They randomly select 50 residents of a local apartment building.

• They go door to door in the neighborhood.

• They email a survey to 150 randomly selected residents.

The high school cafeteria is considering changing the menu from hot wings to chicken tenders.  Which of the following best describes a random sample?

• Students in the 10th grade.

• Students in Mr. Barnes class.

• 100 names are drawn from a hat.

• 50 randomly selected band students.

A video game platform randomly selected 200 of its subscribers and asked them how many hours of shows they watch per week. Of those surveyed, 90 watch more than 10 hours per week. Based on the data, if the company has 2,500 subscribers, then how many watch more than 10 hours per week?

• 900

• 1,125

• 110

• 0.45

The table below represents the number of donut holes per box at Damon's Donuts. What is the median number of donut holes?

• 23

• 23.75

• 24

• 24.5

The list below shows the allowance earned by seven of the students in Mrs. Lett's class. What is the mean allowance in Mrs. Lett's class?

$7, $8, $8.50, $10, $7, $6.25, $11

• $8.25

• $57.75

• $8

• $9.25

The mean absolute deviation is 0.5.  What conclusions can be drawn?

• The data points are close to the median.

• The data points are far from the median.

• The data points are far from the mean.

• The data points are close to the mean.

Determine the IQR of the data below.

10, 13, 16, 9, 8, 10, 14, 11, 17, 14

• 4
• 6
• 3
• 5