?
The mean of 9 observation is 16. One more observation is included and the new mean becomes 17. The 10th observation is :
Answer & Solution
Correct Answer:
Option
C
According to the question mean of 9 observations is = 16
Sum of all observations is = 16 × 9 = 144
When one more observation included the new mean = 17
Sum of 10 observations = 10 × 17 = 170
∴ 10th observation = 170 - 144 = 26
Sum of all observations is = 16 × 9 = 144
When one more observation included the new mean = 17
Sum of 10 observations = 10 × 17 = 170
∴ 10th observation = 170 - 144 = 26
Join the Discussion
Login to post a comment or share your explanation.
Login