Data and Statistics

Select all the true statements.

• Given a box plot, it is always possible to calculate the mean of the data.

• Given a box plot, it is always possible to calculate the median of the data.

• Given a box plot, it is always possible to construct a corresponding dot plot.

• Given a dot plot, it is always possible to construct a corresponding box plot.

• Given a histogram, it is always possible to construct a corresponding box plot.

The air quality was tested in many office buildings in two cities. The results of the testing is shown in these box plots. A level of less than 50 parts per million is considered healthy. A level of 50 or more parts per million is considered unhealthy. Select all the statements that must be true.

• The lowest recorded measurement was in city Q.

• All buildings tested in city P are in the healthy range.

• The mean for city P is greater than the mean for city Q.

• The range for city Q is greater than the range for city P.

• The median for city P is greater than the median for city Q.

This box plot displays information about the number of text messages some students sent one day. What is the median number of texts sent by students?

• 10

• 20

• 14

• 26

Jada asked some students at her school how many hours they spent watching television last week, to the nearest hour. Here is a histogram for the data she collected. About how many students did Jada ask?

• 30

• 40

• 100

• 15

Look at these numbers - 11, 11, 7, 18, 8. What is the correct way to put them in order so you can find the median?

• 18, 11, 11, 8, 7

• 11, 7, 8, 18, 11

• 8, 7, 11, 11, 18

• 7, 8, 11, 11, 18

Look at these numbers - 12, 14, 17, 8, 14. What is the correct way to put them in order so that you can find the median?

• 17, 14, 14, 8, 12

• 17, 14, 14, 12, 8

• 8, 12, 14, 14, 17

• 14, 8, 12, 17, 14

At Donald's Donuts the number of donut holes in a bag can vary. Help Donald find the MODE.

12,10,10,10,13,12,11,13,10

• 10

• 12

• 10 and 12

• No Mode

Given the data: 136, 150, 119, 150, 125, 140.
Find the upper quartile (Q3). (Hint... put the numbers in order and find the median to help you find Q3)

•  125

• 150

• 139.5

• 143

What is the mode of the dot plot?

• 8

• 9

• 1

• 2

3, 3, 4, 6, 9 - What is the mode?

• 3

• 4

• 6

• 9