The mean of 21 observation is 12.5. If an observation 12.5 is deleted, then the mean of the remaining
observations is(It is better if u answer along with explanation)
A) 102
B) 10.5
C) 12.5
D) 12
Answers
Answered by
3
Answer:
New Mean = 12.5
Mark the answer as Brainliest.
Step-by-step explanation:
Original Mean = 12.5
Number of Observation = 21
Total Observation = 21 × 12.5 = 262.5
Now, 12.5 observation is deleted.
New number of observation = 20
New Total Observation = 262.5 - 12.5 = 250
New Mean = 250/20 = 12.5
Similar questions