WEDNESDAY MATH 8 SET #4: Scatter Plots and Data (8th CCSS)

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1. The two-way table shows the number of male and female students enrolled in each grade at Cassandra’s middle school. How many total female students are enrolled at Cassandra’s middle school?

• A. 98
• B. 331
• C. 339
• D. 335

2. The scatterplot below shows the number of years of experience of 8 different wedding photographers and the number of weddings they photographed over the last year. Based on the scatter plot, what would be the best prediction of the number of weddings that a photographer with 7 years of experience would photograph in a year?

• F. 41
• G. 57
• H. 68
• J. 75

4. The scatter plot shows different people’s ages and the number of states they have visited. Based on the equation of the trend line shown, how many states would you predict someone who is 50 years old has visited?

• F . 12 states
• G. 22 states
• H. 18 states
• J. 15 states

5. Which best describes the main difference between scatter plots X and Y shown below?

• A. X shows clustering while Y does not show clustering.
• B. X is non-linear while Y is linear.
• C. X shows negative association while Y shows positive association.
• D. X contains an outlier while Y does not contain any outliers.

8. The two-way table shows the type of lunches ordered by teachers and students in the cafeteria yesterday. Of the total people who ordered in the cafeteria yesterday, find the relative frequency of teachers to the nearest percent.