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The table below, gives the marks of 50 Students in a test.
83 51 83 60 61 73 44 90 70 93
56 34 52 61 43 57 40 58 88 64
52 71 25 86 79 35 73 44 71 95
63 53 48 78 65 98 28 72 67 82
46 54 62 35 70 41 63 73 50 68
a. construct a grouped frequency distribution table using the class interval 21- 30 31-40 41-50 51-60 61-70 71-80 81-90 91-100
b. from the table calculate:
the mean
the median ​

Sagot :

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