Question

find the midrange for the following group of data items.
15, 12, 11, 10, 16, 13, 9, 11
the midrange is \boxed{}. (type an integer or a decimal.)

Explanation:

Step1: Find the maximum and minimum values

The given data set is \(15, 12, 11, 10, 16, 13, 9, 11\).
The maximum value \(M = 16\).
The minimum value \(m=9\).

Step2: Calculate the mid - range

The formula for mid - range is \(Mid - range=\frac{M + m}{2}\).
Substitute \(M = 16\) and \(m = 9\) into the formula: \(Mid - range=\frac{16+9}{2}=\frac{25}{2}=12.5\).

Answer:

\(12.5\)