An "all possible regressions" search of a data set containing 7 independent variables will produce ______ regressions.
A)13
B)127
C)48
D)64
E)97

Question

Quizplus · Accepted Answer

An "all possible regressions" search involves examining every possible combination of independent variables, including the cases where some variables are excluded. For 7 independent variables, the total number of combinations is 2^7 - 1 (subtracting 1 because the case where no variables are included is not considered a regression). This equals 128 - 1 = 127 regressions.

An "All Possible Regressions" Search of a Data Set Containing