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There are 16 numbers are there.

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To find the median, there are 16 numbers.

There are even number of items.Find the mean of the two middle numbers of 8th and 9th.Those are in between the 3 and 4.

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You can from the graph that 3 occurs most often. So 3 is the mode. $\"\"$

The mean is 3.625, median is 3.5 and mode is 3.