Sriram was conducting an experiment in which the average of 11 observations came to be 92, while the average of first five observations was 89, and that of the last five was 86. What was the measure of the 6th observation ?

134

137

139

141

Correct Answer: 137

Explanation:

This can be done as,

(11 × 92) - (5 × 89) - (5 × 86)

= 1012- 445 - 430 = 137

Question

Sriram was conducting an experiment in which the average of 11 observations came to be 92, while the average of first five observations was 89, and that of the last five was 86. What was the measure of the 6th observation ?

Accepted Answer

This can be done as, (11 × 92) - (5 × 89) - (5 × 86) = 1012- 445 - 430 = 137