15.
The mean of 8 observations was found to be 30. Later it was detected that one observation
64 was mistakenly read as 24. Find the correct mean.
बाद में पता चला कि एक प्रेक्षण 64 को गलती से 24 पढ़ लिया गया था।
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Answer:
35
Step-by-step explanation:
Mean = total of observations/number of observations,
Mean= 30x8= 240
Correct mean = Mean- Wrongly written number+ Correct number
= 240 - 24 + 64
= 240 + 40 = 280
Mean = total of observations/number of observations
= 280/8= 35.
Therefore the correct mean is 35.
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