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ICSE Class 9 Answered

The mean of 5 observations is 22 and other 4 observations is 17.5. Find the mean of all observations
Asked by banofurjana | 12 Dec, 2023, 08:21: PM
answered-by-expert Expert Answer

If the mean of 5 observation is 22 , then total value of 5 observations  = 5 × 22 = 110

if the mean of other 4 observation is 17.5 , then total value of 4 observations  = 4 × 17.5 = 70

Total value of 9 observations = 180

Mean of all obervations = 180/9 = 20

Answered by Thiyagarajan K | 12 Dec, 2023, 08:51: PM

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