Question

The sample means for three samples of 20 are shown in the table.

A 3-column table with 3 rows. Column 1 is labeled Sample with entries Sample 1, Sample 2, Sample 3. Column 2 is labeled Sample Mean with entries 12, 8, 16. Column 3 is labeled Actual mean with entries 10.5, 10.5, 10.5.

Compute the variation of each predicted population mean from the sample means in the table.

Sample 1:

Sample 2:

Sample 3:

Answer 1

Answer:

sample 1:    1.5

sample 2:     -2.5

sample 3:     5.5