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# Mean of 50 observations was found to be 80.4. But later on, it was discovered that 96 was misread as 69 at one place. Find the correct mean.

**Solution:**

Given, the mean of 50 observations is 80.4

It was discovered that 96 was misread as 69 at one place.

We have to find the correct mean.

__Mean__ = sum of all observations / total number of observations

Given, mean = 80.4

Number of observation = 50

Sum of all observations = 80.4(50)

= 804(5)

= 4020

Now, correct mean = (4020 - 69 + 96) / 50

= (4116 - 69)/50

= 4047/50

= 80.94

Therefore, the correct mean is 80.94

**✦ Try This: **Mean of 50 observations was found to be 100. But later on, it was discovered that 56 was misread as 65 at one place. Find the correct mean.

**☛ Also Check:** NCERT Solutions for Class 9 Maths Chapter 14

**NCERT Exemplar Class 9 Maths Exercise 14.3 Problem 12**

## Mean of 50 observations was found to be 80.4. But later on, it was discovered that 96 was misread as 69 at one place. Find the correct mean.

**Summary:**

Mean of 50 observations was found to be 80.4. But later on, it was discovered that 96 was misread as 69 at one place. The correct mean is 80.94

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