Question

find a. the mean; b. the deviation from the mean for each data item; and c. the sum of the deviations in part (b) for the following group of data items.
139, 143, 149, 151, 153

a. the mean is 147. (simplify your answer.)
b. complete the following table by entering the deviations for each data value

Explanation:

Step1: Calculate deviation for 139

Deviation = data item - mean. So, \(139 - 147=-8\)

Step2: Calculate deviation for 143

\(143 - 147=-4\)

Step3: Calculate deviation for 149

\(149 - 147 = 2\)

Step4: Calculate deviation for 151

\(151 - 147=4\)

Step5: Calculate deviation for 153

\(153 - 147 = 6\)

Answer:

Data Item	139	143	149	151	153