Question

karen took three samples from a population of students to measure their average study time. compute the variation of each predicted population mean from the sample means in the table. \
\

sample	predicted mean	actual mean	\
---	---	---	\
sample 1	34	28	\
sample 2	15	28	\
sample 3	29	28	\

\
sample 1: \
sample 2: \
sample 3: \
-2 \
-1 \
1 \
2

Explanation:

Step1: Calculate Sample 1 variation

Variation = Predicted Mean - Actual Mean
$34 - 28 = 6$

Step2: Calculate Sample 2 variation

Variation = Predicted Mean - Actual Mean
$15 - 28 = -13$

Step3: Calculate Sample 3 variation

Variation = Predicted Mean - Actual Mean
$29 - 28 = 1$

Answer:

Sample 1: 6
Sample 2: -13
Sample 3: 1