Data Analysis

Which data set goes with this stem-and-leaf plot?

• 41,52,57,58,65,66,70,75,78,78,78,80,80,95

• 41,52,56,58,66,70,75,78,78,78,80,80,95,56

• 41,52,57,58,65,66,70,75,78,78,78,78,80,80,

• 52,52,57.58,65,66,70,75,78,78,78,80,80,95

Which of the following best describes the process of finding the range for a set of data?

• ADD the biggest and smallest numbers

• Place the number in order from least to greatest then find the middle.

• Find the difference between the Maximum and the Minimum.

• Find the average.

How many minutes did the most number of people study?

• 61-90

• 0-30

• 31-60

• 91-120

Looking at this plot. What number appears the most?

• 47

• 76

• 92

• 98

The teacher wants to have 40 more pencils than erasers. How many more pencils does the teacher need to buy?

• 10

• 20

• 30

• 60

What is the mode of the following set of numbers: 5, 7, 8, 8, 9, 10, 10, 10?

• 8

• 10

• 7

• 5

If a survey of 20 students showed that 12 liked chocolate ice cream, 5 liked vanilla, and 3 liked strawberry, what is the percentage of students who liked chocolate ice cream?

• 60%

• 75%

• 25%

• 40%

Samantha recorded the number of hours she spent reading each day for a week. The data is as follows: 1, 2, 1, 1, 3, 2, 2. What is the mean number of hours she spent reading each day?

• 3.2

• 1.71

• 2.5

• 1.5

If the range of a set of numbers is 15, and the smallest number in the set is 5, what is the largest number in the set?

• 10

• 20

• 25

• 30

A class of 25 students took a math test. The scores are as follows: 85, 90, 92, 88, 75, 80, 85, 90, 95, 100, 85, 90, 92, 88, 75, 80, 85, 90, 95, 100, 85, 90, 92, 88, 75. What is the median score?

• 85

• 88

• 100

• 75