8.5C and 8.11A Linear, Non-linear and No Association

Which scatterplot does NOT suggest a linear relationship between x and y?

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Which scatterplot does NOT suggest a linear relationship between x and y?

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Which scatterplot suggest a linear relationship between x and y?

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Which scatterplot suggest a linear relationship between x and y?

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A math teacher observed that as the number of hours students studied their multiplication facts increased, the number of errors the students made on their multiplication tests decreased. Which scatterplot could support this teacher's observation?

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The scatterplot shows the energy in watts and the light output in lumens per watt of several lightbulbs. Which statement best describes the association between the energy and light output of these lightbulbs?

• As the energy increases, the light output increases.

• As the energy increases, the light output decreases.

• As the energy increases, the light output remains the same.

• There is no apparent association between the energy and light output.

The daily attendance at a bowling alley was recorded for 15 days. The scatterplot shows the number of lanes rented each day and the number of people who bowled that day.

Which statement is best supported by the scatterplot?

• There is a non-linear association between the number of lanes rented and the number of people who bowled.

• There is a negative linear association between the number of lanes rented and the number of people who bowled.

• There is no apparent association between the number of lanes rented and the number of people who bowled.

• There is a positive linear association between the number of lanes rented and the number of people who bowled.

Julie made 25 international long-distance phone calls to London last month. The scatterplot shows the length and cost of each phone call she made.

Which conclusion is best supported by the scatter plot?

• As the length of a call increases, the cost of the call increases.

• As the length of a call increases, the cost of the call remains the same.

• As the length of a call increases, the cost of the call decreases.

• There is no relationship between the length of a call and the cost of a call.