Reading Scatterplot

The scatterplot shows the number of people in each of 8 different households and the average amount of money each household spent on groceries. Based on the scatterplot, what is the best prediction of the average amount of money spent on groceries for a household that has 7 people?

• $240

• $190

• $210

• $300

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TEKS 8.5D

Ben collected data from a group of 12 people. He measured each person's resting heart rate and recorded the average number of hours each person exercised per week. He created a scatterplot to show the data he collected. Based on the scatterplot, what is the best prediction of the resting heart rate, in beats per minute, of a person who exercises an average of 8 hours each week?

• 30 beats per minute

• 50 beats per minute

• 55 beats per minute

• 60 beats per minute

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TEKS 8.5D

The manager of a restaurant recorded how many people were in different groups of customers and how much those groups spent on food and beverages. The scatterplot below shows the data she recorded. Based on this scatterplot, about how much money would a group of 10 people be expected to spend on food and beverages at this restaurant?

• $135

• $115

• $105

• $150

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TEKS 8.5D

Mrs. Collins made a scatterplot to show the relationship between the number of absences a student in her class has and the student's final exam score. Based on this scatterplot, approximately what score should a student with 6 absences expect to receive on the final exam?

• 65

• 92

• 67

• 76

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TEKS 8.5D

A company employee had to read several financial reports. The scatterplot shows the lengths of the reports and reading times for those reports. Which prediction of the time in minutes to read a 90-page report is best supported by the data?

• 95 min

• 105 min

• 125 min

• 155 min

Which of the following statements about scatterplots A and B is true?

• Both scatterplots show positive association.

• Scatterplot B has a stronger association than A.

• Only scatterplot A shows linear association.

• Only scatterplot B appears to have outliers.

Which scatterplot shows both negative and linear association?

• A

• B

• C

• D

Which scatterplot does not show linear association?

• A

• B

• C

• D

Which variables would the scatterplot shown be most likely to represent?

• The amount of rainfall and the height of the corn stalks

• The decades since 1950 and the average cost of gas

• The weight of a dog and the monthly cost of dog food

• The number of clubs a student joins and the student's height

Which of the following is NOT a true statement about scatterplots A and B?

• Only scatterplot A shows positive association.

• Scatterplot A has a stronger association than B.

• Both scatterplots show linear association.

• Neither scatterplot appears to have any outliers.