Statistics Percentages to Raw Data

The sum of all the values in a data set divided by the number of data values. Also called the average.

• mean

• median

• mode

• range

What is the range of the set of data?

• 70

• 65

• 80

• 55

What is the mean of test scores?
{70, 70, 80, 85, 85, 90, 95, 95, 100, 100}

• 87

• 85, 95, and 100

• 30

• 85 and 90

Greg randomly surveyed 25 students in his school to see if they had ever had an overdue library book. The results are shown in the table. According to the sample, about what percent of the students in the school district have had an overdue library book?

• A
• B
• C
• D

Ezra's Ice Cream Shop has two stores, the old store and the new store. Both stores sell ice cream and milk shakes. One year's sales at the two stores are shown in the table. Drag and drop the correct value into each box to make each statement true. Round each percentage to the nearest whole number if necessary. Customers at the old store bought milk shakes ​ (a)   of the time. Customers at the new store bought milk shakes ​ (b)   of the time. Of all the milk shakes sold at Ezra's Ice Cream Shops, ​ (c)   were at the old store

• 20%

• 26%

• 59%

• 41%

• 74%

• 80%

Answer explanation

At the old store, the portion of sales that are milk shakes is 13,400/(13,400 + 52,100) = 0.20458. Converted to a percent and rounded to the nearest whole number, this is 20%.

At the new store, the portion of sales that are milk shakes is 9,200/(9,200 + 25,800) = 0.26286. Converted to a percent and rounded to the nearest whole number, this is 26%.

The portion of all milk shakes sold that are sold at the old store is 13,400/(13,400 + 9,200) = 0.59292. Converted to a percent and rounded to the nearest whole number, this is 59%.

Tags

CCSS.6.RP.A.3C

Which pet was chosen by 6 people?

• Cat

• Goldfish

• Hamster

• Snake

A spinner is divided into four colors, but not equally. Shannon spun the spinner 500 times. The number of times the spinner landed on each of the four colors is shown in the table.

Which is the most likely the probability of the spinner landing on red?

• 17%

• 21%

• 29%

• 33%

A store sells loaves of bread. The table below shows the number of loaves of bread sold each day for a week. What is the difference between the mean and median number of loaves of bread sold?

• 8

• 12

• 19

• 25

• A

• B

• C

• D