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The number of Science and Mathematics pr...

The number of Science and Mathematics project submitted by Model high school. Nandpur in last 20 years at the state level science exhibition is :
2, 3, 4, 1, 2, 3, 1, 5, 4, 2, 3, 1, 3, 5, 4, 3, 2, 2,3, 2. Prepare a frequency table and find the mean oh the data.

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The mean of the data is 2.75 .
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