Question

Calculate mode by grouping method.


Class intervals | Cumulative Frequency
Less than 10 | 4
Less than 20 | 20
Less than 30 | 35
Less than 40 | 55
Less than 50 | 62
Less than 60 | 67
​

Answer 1

Answer:

ISI mark registration is mandatory for all the certifying products sold in India. The mark is meant for better quality and safety of the products. The Products having ISI indicate that products are in compliance with the Indian standard quality.

Answer 2

Answer:

Class Frequency Cumulative Frequency

(less than type)

0−10 2 2

10−20 3 5

20−30 7 12

30−40 8 20

40−50 5 25

Total

25

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