Which of the following is not a way to decrease error variance?
A)Hold all laboratory conditions constant
B)Use a homogeneous sample
C)Use reliable measures
D)Use a double-blind procedure

Question

Quizplus · Accepted Answer

A double-blind procedure is primarily used to eliminate bias, not to decrease error variance. Holding laboratory conditions constant, using a homogeneous sample, and using reliable measures are direct methods to reduce error variance by controlling external variability and increasing the precision of measurements.

Which of the Following Is Not a Way to Decrease