Question

Find the mean, by Direct Method (1-4):class interval 0-10 10-20 20-30 30-40 40-50 frequency 12 16 6 7 9
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Answer 1

Step-by-step explanation:

first write the no. in assending ir descending order.

6 7 9 12 16

mean = sum of all observation / no. of observation.

mean= 12+16+6+7+9/5

mean = 50 / 5

mean = 10.

so,

mean is , 6 7 9 (10) 12 16.

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