A study is conducted on the causes of flat feet,and shows a linear relation between age and having mechanical disturbances of the foot.The correlation between these two variables is 0.84.The report concludes that older people have greater chances to have flat feet.Is the calculation of the correlation appropriate?
A)No: having mechanical disturbances of the foot is a categorical variable.
B)Yes: the two variables are quantitative.
C)No: having mechanical disturbances of the foot is a response variable.
D)Yes: correlation is less than 1.
E)Yes: age is a quantitative variable.

Question

Quizplus · Accepted Answer

Correlation measures the strength and direction of a linear relationship between two quantitative variables. Since "having mechanical disturbances of the foot" is a categorical variable (yes or no), calculating a correlation coefficient is not appropriate.

A Study Is Conducted on the Causes of Flat Feet,and