Question

Mean of the observations X-1, X and X + 4 is _____??
a. X-1
b. X + 3
c. X + 1
d. X-3​

Answer 1

Answer:

Mean =( X-1+ X+X+4)/3

= X+1

Answer 2

Answer:

b) X + 3

By the equation doing here and then. send +4 to -1