Question

0>10 10
10>20 20
20>30 25
30>40 15
40>50 20
50>60 35
60>70 45
70>80 10
80>90 15
90>100 5
Using the grouped data in Table 1.1 calculate:
1.1.1 Calculate the mean number of marks. (2)
1.1.2 Calculate the median number of marks. (4)
1.1.3 Calculate the modal number of marks. (4)
1.1.4 Calculate the standard deviation.

Answer 1

Explanation:

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