Question

If mean of five observations x, x + 2, x + 4, x + 6 and x + 8 is 11, then x =
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Answer 1

Answer:

x =7

Step-by-step explanation:

therefore

(x + x +2 + x +4 +x+6+x +8) / 5( number of terms are 5) = 11

5x + 20 / 5= 11

5x +20 = 11 *5

5x +20 = 55

5x = 55- 20

5x = 35

x =35 /5

x =7

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