Question

ten students compared their test percentage grades: 93, 77, 100, 68, 94, 83, 86, 88, 93, 85. what is the mean percentage score? 83.4 86.7 no mean 89

Explanation:

Step1: Find the sum of the scores

$93 + 77+100 + 68+94+83+86+88+93+85=867$

Step2: Divide by the number of data - points

The number of students (data - points) is $n = 10$. The mean $\bar{x}=\frac{867}{10}=86.7$

Answer:

86.7