Question

find the mean for the following group of data items. 90, 87, 89, 82, 87, 93 the mean is □. (type an integer or a decimal.)

Explanation:

Step1: Sum the data items

We add up all the given numbers: \(90 + 87 + 89 + 82 + 87 + 93\).
First, \(90+87 = 177\), \(177+89 = 266\), \(266+82 = 348\), \(348+87 = 435\), \(435+93 = 528\).

Step2: Divide by the number of data items

There are 6 data items. So we divide the sum by 6: \(\frac{528}{6}\).
\(528\div6 = 88\).

Answer:

88