Scatter Plots and Data Table

Which is a true statement about two numerical sets of data that have a negative association?

• As one variable increase, the other variable does not change.

• As one variable increases, the other variable increases.

• As one variable decreases, the other variable decreases.

• As one variable increases, the other variable decreases.

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

• Only scatter plot A show negative association.

• Neither scatter plot appears to have any outliers.

• Scatter plot A has a stronger association than B.

• Only scatter plot A shows a linear association.

Write an equation in slope-intercept form for the trend line shown on the scatter plot to the left.

The scatter plot shows the number of days since several people filled their cars with gas and the gallons of has in their tank. Which is the most reasonable estimate of the gallons of gas in a tank if it has been 3 days since filling up?

• 13 gallons

• 17 gallons

• 23 gallons

• 10 gallons

Which scatter plot shows both positive and linear association?

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Which variables would the scatter plot to the left be most likely to represent?

• The number of siblings a person has and the person's GPA.

• The number of guests and the total water consumption.

• The total number of miles driven and the total gallons of gas used.

• The number of people at a concert and the total concession sales.

A scatter plot was made to show the number of homes in a town based on the year. A trend line was drawn on a graph with an equations of y = 84x + 625, where x is the number of years since 1995 and y is the number of homes in the town. Predict the number of homes in the town in 2015.

A scatter plot was made to show the number of homes in a town based on the year. A trend line was drawn on a graph with an equations of y = 84x + 625, where x is the number of years since 1995 and y is the number of homes in the town. Predict the year the town had 1,213 homes.

Write an equation for the trend line shown on the scatter plot. Use the equation to predict the weight of a suitcase for someone taking a 9-day trip. (2 answers)

Which of the following is NOT a true statement about the scatter plot to the left?

• The association is postitive.

• The association is linear.

• For every additional day of a trip, the weight of a suitcase increases 5 pounds.

• For every 5 additional days of a trip, the weight of a suitcase increases one pound.