Data and Statistics Quiz

A sample of students is taken from the school’s A honor roll. The school estimates that there are 360 students on the A honor roll. Using this sample, which proportion would be used to predict how many students on the A honor roll are 8th graders?

Tags

TEKS.MATH.7.4D

TEKS.MATH.7.6F

TEKS.MATH.7.12B

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

(use the proportion you picked in #1 to solve for x)

• 126

• 99

• 135

• 14

Tags

TEKS.MATH.7.4D

TEKS.MATH.7.6F

TEKS.MATH.7.12B

If there are 360 students on the A honor roll, how many students on the A honor roll are 7th graders?

(set up proportion and solve for x)

• 126

• 99

• 135

• 14

Tags

TEKS.MATH.7.4D

3. 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.

Tags

TEKS.MATH.7.6F

TEKS.MATH.7.12B

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.

Tags

TEKS.MATH.7.6F

TEKS.MATH.7.12B

A streaming service 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?

(Set up a proportion and solve for x)

• 400

• 1,125

• 1,400

• 800

Tags

TEKS.MATH.7.4D

TEKS.MATH.7.6F

TEKS.MATH.7.12B

If there are 180 students in the girls athletics program, then 27 students participated in soccer.

• True
• False

Tags

TEKS.MATH.7.4D

If 45 girls participated in basketball, then 200 are in the girls athletics program.

• True
• False

Tags

TEKS.MATH.7.4D

TEKS.MATH.7.6G

(First Step: find your totals and percentages)

What percent of strikeouts is Samar responsible for?

• 10%

• 20%

• 30%

• 40%

Tags

TEKS.MATH.7.4D

TEKS.MATH.7.6G

Which of the following pitchers account for a total of 40% of the strikeouts?

• Jose, Samar, and Justin

• Yu and Justin

• Mark, Samar, and Jose

• Jose and Carlos

Tags

TEKS.MATH.7.4D

TEKS.MATH.7.6G