Question

finding the mean and median
miriams study group received test scores of 96, 81, 82, 99, 94, 92, 95, 82, and 80. find the mean and median scores.
the mean is 80
the median is 92

Explanation:

Step1: Calculate the Mean

First, sum all the test scores: \(96 + 81 + 82 + 99 + 94 + 92 + 95 + 82 + 80\). Let's compute that: \(96+81 = 177\), \(177+82 = 259\), \(259+99 = 358\), \(358+94 = 452\), \(452+92 = 544\), \(544+95 = 639\), \(639+82 = 721\), \(721+80 = 801\). There are 9 scores, so the mean is \(\frac{801}{9}=89\).

Step2: Calculate the Median

First, order the scores from least to greatest: \(80, 81, 82, 82, 92, 94, 95, 96, 99\). There are 9 values, so the median is the 5th value, which is 92.

Answer:

Mean: \(89\), Median: \(92\)