The marks of 20 students in Physics are
given below.
56, 32, 57, 74, 12, 45, 68, 87, 11, 34, 53,
23, 47, 24, 78, 37, 68, 79, 44, 67
a) Find the average marks.
b) Divide the class into two groups on
the basis of the class performance.
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Answer:
The marks scored by 20 students in a test are given below: 54, 42, 68, 56, 62, 71, 78, 51, 72, 53, 44, 58, 47, 64, 41, 57, 89, 53, 84, 57.
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