The table shows the data for a math class's first chapter test marks and the final exam marks.

First chapter test:
75, 85, 88, 92, 92, 95, 95, 100, 100, 100

Final exam:
60, 65, 78, 78, 82, 88, 91, 93, 95, 98

Which data set has the largest IQR?

A.) First chapter test
B.) Final exam
C.) They have the same IQR
D.) There is not enough information to find the IQR

Use a calculator to verify that σ(x) = 62, σ(x2) = 1034, σ(y) = 644, σ(y2) = 93,438, and σ(x y) = 9,622. compute r. (enter a number. round your answer to three decimal places.) as x increases from 3 to 22 months, does the value of r imply that y should tend to increase or decrease? explain your answer. given our value of r, y should tend to increase as x increases. given our value of r, we can not draw any conclusions for the behavior of y as x increases. given our value of r, y should tend to remain constant as x increases. given our value of r, y should tend to decrease as x increases.