Question

rosas work finding the median of a set of test scores is shown below. {80, 70, 90, 80, 90, 65, 100, 100, 90} 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:

To find the median of a data - set, the first step is to arrange the data in ascending or descending order. Rosa did not reorder the elements of the data - set before attempting to find the median.

Answer:

She should have reordered the elements from least to greatest.