Question

suppose you have a data set that includes the values, 20, 30 and 50. if you add a fourth value to this data set, and after doing that the mean of the data set is 50, what was the value that you added? a. -10 b. 40 c. 50 or d. 100

Answer 1

D. 100

Explanation:

I answered this question and i got it correct, if you dont get it correct i am terribly sorry

Answer 2

this question is invalid, its none of the above because the fourth number would be 200