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:

Mean value of the ACT scores

x⁻  = 18.66

Step-by-step explanation:

Explanation:-

Given data

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

Mean value or Expected value

  x ⁻ = ∑x/n

Mean value = 18.66

Final -

Mean value of the ACT scores

                           x⁻  = 18.66

the entire expression should be subtracted from 30. to subtract the quantity, distribute the negative sign, which changes the signs on the terms. so, the –2 changes to positive and gets added to 30 instead of subtracted from it.

hope this ! ^w^

answer: i'm great at algebra

~coco

step-by-step explanation: