# Question: Exercise CR5 16 gave the least squares regression line for predicting y

Exercise CR5.16 gave the least-squares regression line for predicting y = clutch size from x = snoutvent length (“Reproductive Biology of the Aquatic Salamander Amphiuma tridactylum in Louisiana,” Journal of Herpetology [1999]: 100–105). The paper also reported r2 = .7664 and SSTo = 43,951.

a. Interpret the value of r2.

b. Find and interpret the value of se (the sample size was n = 14).

a. Interpret the value of r2.

b. Find and interpret the value of se (the sample size was n = 14).

## Relevant Questions

A study, described in the paper “Prediction of De fibrillation Success from a Single Defibrillation Threshold Measurement” (Circulation [1988]: 1144– 1149) investigated the relationship between defibrillation success ...Foal weight at birth is an indicator of health, so it is of interest to breeders of thoroughbred horses. Is foal weight related to the weight of the mare (mother)? The accompanying data are from the paper “Suckling ...A sample of automobiles traversing a certain stretch of highway is selected. Each one travels at roughly a constant rate of speed, although speed does vary from auto to auto. Let x = speed and y = time needed to traverse ...The data given in the previous exercise on x 5 call-to-shock time (in minutes) and y = survival rate (percent) were used to compute the equation of the leastsquares line, which was y^ = 101.33 2 9.30x The newspaper article ...Draw two scatterplots, one for which r = 1 and a second for which r = 21.Post your question