Math 8 - Scatterplots and Trend Lines (Quiz 11.2)

Choose the scatter plot that best represents this relationship: the age of a tree and its height

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Tags

CCSS.HSS.ID.B.6

Choose the scatter plot that best represents this relationship: The number of pets someone owns and the size of their shoes

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Tags

CCSS.HSS.ID.B.6

Choose the best type of correlation (association):

The outside temperature and the number of layers of clothing people wear.

• Positive correlation

• Negative correlation

• No correlation

Tags

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.7

CCSS.HSS.ID.C.8

CCSS.HSS.ID.C.9

Which of the following lines represents the line of best fit for the scatter plot?

• A
• B
• C
• D

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CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.7

The scatterplot shows the temp, in degrees, outside a house every hour for 10 hours.

Estimate the temp after 13 hours based off the trendline.

• 57.5

• 50

• 10

• 13

• 61.5

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CCSS.HSA.CED.A.2

CCSS.HSF.IF.B.4

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.7

Choose the graph with a trend line that best fits the data.

• graph 1

• graph 2

• graph 3

• graph 4

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CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.7

CCSS.HSS.ID.C.8

What does the slope represent in this situation?

• The sloth moves 1 feet in 3 minutes

• The sloth moves 3 feet in 1 minute

• The sloth moves 10 feet

• The sloth moves 6 feet in 1 minute

• The sloth moves for 1.5 minutes

Tags

CCSS.HSF.IF.B.4

CCSS.HSS.ID.C.7

The slope of the trend line is $\frac{-5}{7}$ 

What does that mean?

• gain 5 hour of sleep for 7 cups of coffee

• lose 5 hours of sleep for 7 cups of coffee

• lose 7 cups of coffee for 5 hours of sleep

• lose 5 cups of coffee for 7 hours of sleep

• gain 7 cups of coffee for every 5 hours of sleep

Tags

CCSS.HSS.ID.C.7

Duane made a trend line based off of his scatter plot and found that the slope was 9. What does the slope mean?

• There are 9 people at the beach

• The number of people at the beach increases by 9 for every temperature increase of 1

• The temperature is 9

• The temperature increases by 9 for every 1 person at the beach

Tags

CCSS.HSF.IF.B.4

CCSS.HSS.ID.C.7

A scatterplot and trendline was created comparing time spent exercise with body weight. What does the y-intercept mean in the context of this situation?

• How much a person weighs if they spend no time exercising

• The average weight of a person

• The longest amount of time that a person spent exercising in the survey

• The heaviest person in the survey

• A persons weight to height ratio

Tags

CCSS.HSS.ID.C.7