Answer: Observations= X,X+2,X+4,X+6,X+8 No of observations=5 Mean of observations= 13 Sum of observations= Mean of observations × No of observations = 13 × 5 = 65. Sum of observations in terms of X = X+2+X+4+X+6+X+8 = 5X+20 According to the problem 5X + 20 = 65 5X = 65 — 20 5X = 45 X = 9 The value of X is 9. Reply
Answer:
Observations= X,X+2,X+4,X+6,X+8
No of observations=5
Mean of observations= 13
Sum of observations= Mean of observations × No of observations
= 13 × 5 = 65.
Sum of observations in terms of X = X+2+X+4+X+6+X+8 = 5X+20
According to the problem
5X + 20 = 65
5X = 65 — 20
5X = 45
X = 9
The value of X is 9.
Answer:
(c) 53
Step-by-step explanation:
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