Question

A colleague has been tutoring six students in 11th grade to prepare for the ACT. This colleague has asked you to evaluate the performance of his students. Student scores were as follows: 20, 18, 16, 15, 23, 20. The mean of the ACT scores is:

Answer 1

Mean value of the ACT scores

x⁻ = 18.66

Explanation:

Explanation:-

Given data

Student scores were as follows: 20, 18, 16, 15, 23, 20.

Mean value or Expected value

x ⁻ = ∑x/n

`x^(-) = (20+18+16+15+23+20)/(6)`

`x^(-) = (112)/(6) = 18.66`

Mean value = 18.66

Final answer:-

Mean value of the ACT scores

x⁻ = 18.66