Graphs and Graphing

Graph y=2x+6

Graph y=-1/2x + 8

The scatter plot shows the relationship between the number of chapters and the total number of pages for several books. Use the trend line to predict how many chapters would be in a book with 180 pages.

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Statistics

Scatter Plots

Find the equation of the line of best fit for the given data

• y=163.41x + 4.19

• y=-163.41x + 4.19

• y=-4.19x + 163.41

• y= 4.19x - 163.41

• There is no linear correlation of the data set

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Statistics

Line of Best Fit

Which of the following could be a possible line of best fit for the data?

• y = -5/2x + 20

• y = -x + 19

• y = x + 20

• y = 2/3x + 15

• y = -5/4x + 21

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Statistics

Line of Best Fit

About how many male teachers were there in 2013?

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Scatter Plots

Line of Best Fit

Based on the graph, if Joe earned $400, how many hours did he work?

• 25 hours

• 35 hours

• 45 hours

• 15 hours

• 30 hours

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Statistics

Scatter Plots

How many students scored more than 80%?

• 10
• 13
• 7
• 15

How many students got a perfect score on the test?

• 0
• 2
• 6
• 1

How many games did the team play?

• 15
• 12
• 24
• 14