Reading Graphs Review

Multiple Choice

What type of graph is this?

• Bar Graph
• Histogram
• Line Plot

Multiple Choice

What fraction of the data is from 10-30?

• ¼

• ½

• ¾

• All of it

Multiple Choice

What is the range of this data set?

4, 8, 32, 9, 5, 5, 16, 30, 25, 29

• 4

• 29

• 28

• 32

Multiple Choice

The range of a distribution is the total length of the interval covered by the distribution.

• Yes, that is always true

• No, that is never true

• Well, it's sometimes true

• Well, it's sometimes false

Multiple Choice

What fraction of the data is 50 or less?

• ¼

• ½

• ¾

• All of it

Multiple Choice

Range = maximum value plus minimum value

• True

• False

Multiple Choice

^{What is the least value?}

• 52
• 0
• 13
• 10

Explanation Slide...

The range = the maximum value MINUS the minimum value.

Multiple Choice

75% of the data is from...?

• 30-60

• 10-35

• 30-50

• 50-60

Multiple Choice

With MAD (Mean Absolute Deviation), we are looking for the average distance of data values from the mean of the distribution.

• True

• False

Multiple Choice

What is the mean absolute deviation of this data set?

12, 19, 10, 18, 21

• 4

• 5

• 8

• 10

Multiple Choice

The lower half of the data is from 10 to _____ ?

• 35

• 30

• 50

• 20

Multiple Choice

What is the mean absolute deviation of this data set?

8, 5, 2, 9

• 10

• 5

• 3.5

• 2.5

Multiple Choice

How many people watched more than 6 hours of TV?

• 10
• 5
• 20
• 17

Multiple Choice

With interquartile ranges, there are 18,000 sections or quartiles.

• True

• False

Multiple Choice

The upper half of the data is from 35 to ____?

• 35

• 30

• 50

• 60

Explanation Slide...

It's false. There are 4 quartiles.

Multiple Choice

The interquartile range (IQR) is the distance between the first and third quartiles.

• True

• False

Multiple Choice

Which team has half their heights from 80 to 83 inches?

• Nets

• Knicks

• Both

Open Ended

What is the interquartile range (IQR) of this data set?

8, 2, 4, 5, 6, 2, 4, 2, 6, 3, 1

Multiple Choice

More people had between __ and __ cups of coffee than any other range.

• 0-3
• 8-11
• 12-15
• 16-19

Explanation Slide...

The answer is found by subtracting the lower quartile (Q1) from the upper quartile (Q3), so it's 6-2=4. So the IQR of this data set is 4.

Multiple Choice

What percent of the Nets' height is from 72 to 79 inches?

• 25%

• 50%

• 75%

• 100%

Open Ended

Let's turn our attention to box plots, or box and whisker plots as they are sometimes called. Use the following data set to determine the minimum and maximum values, the median, and the first and third quartiles.

42, 58, 67, 55, 40, 69, 66, 51, 46, 48, 68

Multiple Choice

What percent of the Knicks' height is from 81 to 83 inches?

• 25%

• 50%

• 75%

• 100%

Multiple Choice

Which interval has 400 employees?

• 33-43
• 0-10
• 77-87
• 66-76

Multiple Choice

What fraction of the Nets' height is from 75 to 84 inches?

• 1/4

• 1/2

• 3/4

• All of it

Multiple Choice

What fraction of the Knicks' height is from 74 to 76 inches?

• 1/4

• 1/2

• 3/4

• All of it

Multiple Choice

Which interval has the greatest number of employees?

• 11-21
• 33-43
• 77-87
• 44-54

Multiple Choice

The lower half of the Knicks data is what?

• 72-79

• 76-81

• 74-80

• 74-81

Multiple Choice

The upper half of the Nets data is what?

• 80-83

• 75-82

• 75-84

• 79-84

Multiple Choice

How many employees have a salary less than $22,000?

• 50
• 350
• 0
• 10

Multiple Choice

How many students scored between a 86 and a 90?

• 1
• 3
• 6
• 10

Multiple Choice

How many students are between 48 and 51 inches tall?

• 14
• 8
• 2
• 0

Multiple Choice

Which interval has the greatest number of students?

• 48-51
• 56-59
• 60-63
• 64-67

Multiple Choice

How many students are between 60 and 63 inches tall?

• 3
• 0
• 12
• 7

Multiple Choice

How many people watched between 6 and 10 hours of TV last week?

• 31
• 22
• 15
• 35

Multiple Choice

How many people watched less than 11 hours of TV last week?

• 48
• 90
• 20
• 65

Multiple Choice

How many people watched more than 25 hours of TV last week?

• 0
• 10
• 38
• 42

Multiple Choice

Is this an example of a histogram?

• yes
• no