Question

Of the following, which reflects the strength of the association between a disease and exposure?

A. Degree of statistical significance

B. Size of the relative risk

C. Frequency of the disease

D. Frequency of the exposure

E. Size of the attributable risk

Answer 1

A. Degree of statistical significance

because F- ratio test is significant then we can say that the association between a disease and exposure is strength or good

F ratio = sum of square regression(SSR) / total sum of square(TSS)

SSR = ( Y hat - Y bar)^2

TSS = SSR + SSE

SSE = Sum of square error

SSE = ( Y - Y hat )^2

so, F ratio = SSR/(SSR+SSE)

or R^2 value t test is significant we can say that the association between a disease and exposure is strength or good

t test =

so, degree of statistical significance is important rather than other