Question 1
A scatterplot of log(Y) vs. log(X) reveals a linear pattern with very little scatter. It is probably true that…
◦ the correlation between
X and
Y is near 0.
◦ the scatterplot of
Y vs
X shows a linear association.
◦ the calculator's LnReg function will model the association between
X and
Y.
◦ the residuals plot for regression of
Y on
X shows a curved pattern.
◦ the correlation between
X and
Y is near +1.
Question 2
Blood pressure and cholesterol Suppose that both blood pressure and cholesterol levels of adult women can be described with Normal models, and that the correlation between these variables is 0.60. If a woman's blood pressure places her at the 88
th percentile, at what percentile would you predict her cholesterol level to be?
Aneurysm. Photograph of the aorta, the large blood vessel arising from the heart, with a large bulge
Clear Blood
Measuring Adult Weight and Height
Pressure
Air Pressure and Altitude
Control of BP and Blood Flow