Review of Scatter Plots and Frequency Tables

The scatter plot shows the relationship between the number of labs and the lap time, in seconds, for race cars. Which trend line best fits the data?

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Tags

CCSS.HSF.IF.B.4

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.7

Samuel created a scatter plot of the relationship between the number of miles away and school games are played, x, and the number of fans that come to cheer on the team, y. He then drew the trend line and calculated the equation to be y= -10x+22. Which of the following is incorrect?

• Samuel predicts there will be 122 fans for a game played at a school.

• On average for every mile away from school, 10 fewer fans come to support the team.

• An estimated 10 fans will attend a game played 122 miles from school.

Tags

CCSS.HSF.LE.B.5

Francis creates a scatter plot of the relationship between his hourly pay, in dollars, y, and the number of customers he serves, x. He calculates the equation of the trend line to be y=2.5x + 7. What does the y-intercept represent?

• The y-intercept represents that Francis earns $2.50 when he serves 0 customers.

• The y-intercept represents that Francis earns $7 when he serves 0 customers.

• The y-intercept represents that Francis earns $2.50 when he serves 7 customers.

• The y-intercept represents that Francis earns $7 when he serves 2.5 customers.

Tags

CCSS.HSF.LE.B.5

Yolanda created a scatter plot of the relationship between the number of times she visited different friends each month, y, and the distance, in miles, of the friends from her home, x. She calculated the equation of the trend line to be y = -3.5x + 20. Predict the number of times in one month Yolanda would visit a friend who is 4 miles from her home.

• 34

• 10

• 8

• 6

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

The relationship between temperature, in degrees Fahrenheit, and the number of ice cream cones sold is shown in the scatter plot. How does the outlier affect the trend line?

• The slope decreases.

• The slope increases.

• The slope changes sign.

• The slope is not affected.

Tags

CCSS.HSF-LE.A.1B

The relationship between temperature, in degrees Fahrenheit, and the number of people at a park is shown in the scatter plot. Which statement is correct about the outlier's effect on predictions with the trend line?

• The predicted number of people will be too low.

• The predicted number of people will be negative.

• The predicted number of people will be too high.

• The predicted number of people will not be affected.

Tags

CCSS.HSF-LE.A.1B

By using the scatter plot, select all the words that describe the data.

• cluster

• linear

• negative

• no correlation

• positive

Tags

CCSS.8.EE.B.5

Teenagers who are 13-17 years old and have cell phones are asked which type of phone they have. The results of the survey are shown in the table. Which question can be answered using the table?

• What percentage of teenagers don't have cell phones?

• What percentage of teenagers are 13-17 years old?

• Are teenagers who are 13-14 years old more likely to have cell phones tan teenagers who are 18-19 years old?

• Are teenagers who are 15-17 years old more likely to have smartphones than teenagers who are 13-14 years old?

Tags

CCSS.8.SP.A.4

People ordering pizza are asked if they want green peppers and black olives. The results are shown in the table. Which statement is supported by the results?

• Fewer people want green peppers than want black olives.

• More people want green peppers and black olives than want no green peppers.

• Fewer people want no black olives than want black olives and no green peppers.

• More people want neither green peppers nor black olives than want green peppers.

Tags

CCSS.HSA.CED.A.3

Swimmers and runners are asked if they prefer chocolate milk or sports drinks after exercising. The results from the survey are shown in the table. What percentage of people surveyed are runners and prefer chocolate milk?

• 32%

• 36%

• 52%

• 66%

Tags

CCSS.8.SP.A.4