Question

rosas work finding the median of a set of test scores is shown below. (80, 70, 60, 80, 90, 65, 100, 100, 90) which statement best describes rosas first error? she should have reordered the elements from least to greatest. she should have added the elements and divided by 9. she should have counted repeated elements only once. she should have found the difference between the first and last elements.

Explanation:

Step1: Recall median - finding process

To find the median of a set of data, we first need to order the data from least to greatest.

Step2: Analyze Rosa's error

Rosa did not re - order the elements from least to greatest first. This is the first step in finding the median of a data - set.

Answer:

She should have reordered the elements from least to greatest.