Question

Maria says the mean for the following data set is 5. {5, 7, 2, 8, 9, 1, 2, 5}

What is the actual mean? (Round to the nearest hundredth)

What did Maria do wrong? In other words, what average did she give instead?

Answer 1

4.88

Explanation:

The actual mean is 4.88 to the nearest hundredth. She either approximated the sum of elements to 40 instead of 39 or she approximated the actual mean to the nearest whole number.

I think she gave an approximated average or a rounded average, but I am not sure.

Answer 2

4.88

Explanation:

I used my calculator to do this;

I did stat and I put in the numbers, I clicked calculate and it said the answer was 4.875. Round that to the nearest hundredth and you'll get 4.88.