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In an examination, the mean of marks sc...

In an examination, the mean of marks scored by a class of 30 students was calculated as 58.5 Later on, it was detected that the marks of one student was wrongly copied as 57 instead of 75. Find the correct mean.

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AI Generated Solution

To find the correct mean of the marks after correcting the error, we can follow these steps: ### Step 1: Calculate the total marks based on the incorrect mean The mean of the marks for the 30 students was given as 58.5. To find the total marks based on this mean, we can use the formula: \[ \text{Total Marks (Incorrect)} = \text{Mean} \times \text{Number of Students} \] ...
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