Grade 8 | Unit 6: Associations in Data | End-of-Unit Assessment (A)

Noah gathered data at his school among 7th and 8th graders to see if there was an association between grade level and handedness. The table and graph show his data, but the number of right-handed 8th graders is missing. Description: Bar graph. Vertical axis from 0 to 120 by 10s. Horizontal axis. Seventh grade. Eighth grade. A legend shows blue represents left handed. Orange stripes represents right-handed. Above seventh grade, a blue bar extends up to 10. An orange striped bar extends up to 70. Above eighth grade, a blue bar extends up to 25. Noah found there was no evidence of an association between grade level and handedness.

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8.SP.A.4

Here is a scatter plot. The graph of what linear equation is a good fit for this data?

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8.SP.A.2

Select all the relationships that demonstrate a positive association between variables.

• Outside temperature and cost to heat a home

• Length of time you have walked and distance you have traveled

• Pounds of cherries you buy and amount of money you spend on cherries

• Speed of a train and the amount of time it takes for the train to get to its destination

• Number of people in a grocery check-out line and how long you have to wait to check out

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8.SP.A.1

Draw a scatter plot that shows a positive, linear association and has one clear outlier. Circle the outlier. Draw a scatter plot that shows a negative association that is not linear.

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8.SP.A.1

Jada surveyed all 7th and 8th graders at her school about whether they have pets. Complete the missing entries in this two-way table:

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8.SP.A.4

At a school social, children attend with family members. Everyone had a choice between a sweet snack and a salty snack. Here is a two-way table showing the number of adults and children who made each choice of snack. Complete the table with relative frequency by row. Round to the nearest percent. Make a segmented bar graph to represent the data in your table. Use one bar for each row of the table.

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8.SP.A.4

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8.SP.A.2

8.SP.A.3