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Question

i) Percentage of people in the height range 149.5 -159.5cm is equal to ______.

ii) Percentage difference between the number of people in the height range 159.5 - 169.5cm and 169.5 - 179.5cm is____.


A

30 , 16.66 %

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B

20 , 6.66%

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C

20 , 16.66 %

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D

30 , 6.66 %

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Solution

The correct option is D

30 , 6.66 %


i) Total number of people in the height range 149.5 – 159.5 cm = 9

Total number of people = 30

Percentage of people in the height range 149.5 – 159.5 cm
= 930×100=30%

ii) Number of people in the height range 159.5-169.5 cm = 7

Number of people in the height range 169.5-179.5 cm = 5

Difference between height range 159.5 – 169.5cm and 169.5 – 179.5cm= 7-5 = 2

Percentage difference between height range 159.5 – 169.5 cm and 169.5 – 179.5 cm
= 230×100=6.67%


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