please solve this question
Attachments:

Answers
Answered by
0
Answer:
39.8
Step-by-step explanation:
mean = 40
sum of all 50 items = 40*50 = 2000
actual sum = 2000-(32+12)+(23+11)=1990
actual mean = 1990/50 = 39.8
Answered by
1
Answer:
39.8
Step-by-step explanation:
Given, Mean of 50 items = 40.
∴ Mean = Sum/Total.
Sum of 50 items = Mean * Total
= 40 * 50
= 2000
Given that he wrongly taken as 32 and 12 instead of 23 and 11.
= 2000 + 23 + 11 - 32 - 12
= 1990
Therefore,
∴ Correct mean = 1990/50
= 39.8
Therefore, Correct Mean = 39.8
Hope it helps!
Similar questions