Find percentage from data which are less than mean value

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azizurrahman

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Hi... Pls help me with the following....

A LED light producer tested the life of 30 samples. The question asked to find minimum and maximum LED light life by using spreadsheet formula, which I did. Then, I am stuck when it asked to Find the percentage of LED lights which have less than mean life.
 

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Welcome to the Board!

Here is a hint. Use the AVERAGE function to get the mean.
Then, you can use that in a COUNTIF formula to count the number of records below it.
 
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You are welcome!:)
 
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