Author Question: Answer the question using the value of r and the given best-fit line on the scatter diagram. The ... (Read 43 times)

Jkov05 · **on:** Jan 18, 2020

Question 1

Answer the question using the value of r and the given best-fit line on the scatter diagram.

The scatter diagram and best-fit line show the data for the number of cars waiting by a school (y) and the amount of time after the end of classes (x). The correlation coefficient r is -0.55. Predict the number of cars at time 8 after the end of classes.
◦ 5
◦ 7
◦ No valid prediction is possible.
◦ 6

Question 2

Answer the question using the value of r and the given best-fit line on the scatter diagram.

The scatter diagram and best-fit line show the data for price per item (y) and the availability of that
item (x). The correlation coefficient r is -0.95. Predict the price per item for an availability of 3.
◦ 6.8
◦ No valid prediction is possible.
◦ 7.8
◦ 8.8

mk6555 · **Reply #1 on:** Jan 18, 2020

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