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?
Blood chemistry analyzer.
blood
Common errors in blood pressure assessment
Development of Blood Vessels & Blood
Physics - Density, Pressure, and Pascal's Principle
Branching airways and blood vessels