Statistics & Probability Pre-Quiz

Which line represents the best fit for the scatter plot data?

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A survey of 7th and 8th grade students asked whether they were in favor of of against school uniforms. The two-way table shows the results.

To the nearest tenth of a percent, what percent of 7th grade students were in favor of wearing school uniforms?

• 19.2%

• 41.3%

• 42.9%

• 57.1%

Which scatter plot shows a negative, linear association?

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Which scatter plot shows exactly two clusters and two outliers?

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The two-way table below shows the number of hours students studied and whether they studied independently or with a study group.

What is the relative frequency of students that studied independently for more than 2 hours to the total number of students that studied independently?

• 0.4

• 0.33

• 0.25

• 0.11