While checking the value of 20 observations, it was noted that 125 was wrongly noted as 25 while calculating the mean and then the mean was 60. Find the correct mean.
spamming allowed ✅
Answers
Answered by
22
DEFINE PHOTOSYNTHESIS
the process by which green plants and some other organisms use sunlight to synthesize nutrients from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a by-product.
Answered by
3
Answer:
Let y be the sum of observation of 19 (20 - 1) numbers leaving 125,
So, y + 25 = 20 * 60 = 1200
(Mean = sum of observations/ no. of observations)
As we know
➠ x + 25 = 20 × 60 = 1200
Also
➠ x + 125 =20 × y = 20y
Next, Subtract 125 - 25 = 20y - 1200
➠ 20y = 1300
➠ y = 65
Similar questions