Statistics Quiz

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

A sample of students is taken from the school's A honor roll. The school estimates that there are actually 360 students on the A honor roll. Using the sample, how many students on the A honor roll are 7th graders?

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

• They go door-to-door in a nearby neighborhood.

• They randomly select 50 residents of a local nursing home.

• They call 200 randomly selected town residents.

• They ask patrons if the price was reasonable.

The elementary school cafeteria is considering changing the menu from pizza to sub sandwiches. Which of the following best describes a random sample?

• All the students in Mrs. Johnson's class are surveyed.

• Twenty randomly selected fifth graders are surveyed.

• Fifty randomly selected staff members are surveyed.

• Fifty students' names are drawn from a hat.

A video company randomly selected 100 of its subscribers and asked them how many hours of shows they watch per week. Of those surveyed, 45 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?

• 400

• 1,125

• 1,400

• 800

The dot plot below represents the number of dollars in allowance that students receive each week in Mrs. Jimenez's class. What is the median amount of allowance?

• 5

• 6

• 7.5

• 8

The list below shows the allowance earned by eight of the students in Ms. Tomas's class. What is the mean allowance earned in Ms. Tomas's class?

$7, $12, $8.50, $10, $7, $8, $10.50, $11

The mean absolute deviation is 0.1, 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.

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

• 11

• 16

• 5

• 14

The number of people on various teams within a soccer league are shown below. What info best represents the data?

15, 16, 16, 18, 19, 19, 20, 20, 21, 22, 23

• IQR: 4 Q1: 17 Q3: 21

• IQR: 6 Q1: 16 Q3: 21

• IQR: 5 Q1: 16 Q3:21

• IQR: 3 Q1: 17 Q3:20