The following regression output is available.Notice that some of the values are missing. Given this information,what was the sample size used in the study?
A)8
B)18
C)9
D)16

Question

The following regression output is available.Notice that some of the values are missing.  Given this information,what was the sample size used in the study?
A)8 
B)18 
C)9 
D)16

Quizplus · Accepted Answer

The sample size used in the study can be determined by the "df" value, which is calculated as the difference between the total number of observations and the number of variables in the model. In this case, the "df" value for the model is 7, which means that there were 9 observations in the sample (df = n - k; where k = number of variables in the model and n = sample size). Therefore, the best choice is C.

The Following Regression Output Is Available