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Arithmetic Mean and Range

The height of...

Question

The height of 10 girls were measured in cm and the results are as follows : 135, 150, 139, 128, 151, 132, 146, 149, 143, 141. How many girls have heights more than the 140 ?

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Solution

Six girls have height more than 140.

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Q. Question 9(v)
The height of 10 girls were measured in cm and the results are as follows:
135, 150, 139, 128, 151, 132, 146, 149, 143,141
How many girls have heights more than the mean height?

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