Question
Mathematics Question on Statistics
If the algebraic sum of deviations of 20 observation from 30 is 20, then the mean of the observation is
A
30
B
30.1
C
29
D
31
Answer
30.1
Explanation
Solution
Answer (b) 30.1
If the algebraic sum of deviations of 20 observation from 30 is 20, then the mean of the observation is
30
30.1
29
31
30.1
Answer (b) 30.1