Question

The production of electric bulbs in different factories is shown in the following table. Draw the frequency polygon from the table. No. of bulbs produced (Thousands) 30 - 40 40 - 50 50 - 60 60 - 70 70 - 80 80 - 90 90 - 100 No. of factories 7 33 45 65 47 18 5

Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

Answer:

Median class:50-60

l= 50

h=10

f=20

cf=47

50+(

20

52.5−47

)×10

=>50+

20

5.5

×10

=>50+

2

5.5

=>50+2.75

=52.75

Median= 52.75 bulbs

≈ 53 bulbs