One sample is selected to represent scores in treatment 1 and a second sample is used to represent scores in treatment 2.Which set of sample statistics would present the clearest picture of a real difference between the two treatments?
A)M1 = 36, M2 = 40, and both variances = 43
B)M1 = 36, M2 = 40, and both variances = 6
C)M1 = 38, M2 = 40, and both variances = 43
D)M1 = 38, M2 = 40, and both variances = 6

Question

Quizplus · Accepted Answer

Lower variances indicate that the data points are closer to the mean, making the difference between the means (M1 = 36, M2 = 40) more pronounced and clearer to interpret as a real difference between the two treatments.

One Sample Is Selected to Represent Scores in Treatment 1