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The lengths of 40 leaves of a plant are ...

The lengths of 40 leaves of a plant are measured correct to the nearest (millimeter, and the data obtained is represented in the following table

Find the median length of the leaves.
(Hint: The data needs to be converted to continuous classes for finding the median, since the formula assumes continuous classes. The classes then change to 117.5-126.5,126.5-135.5,...,171.5-180.5.)

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The correct Answer is:
146.75mm
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