5. The following frequency distribution shows the weight of students in a class.
Weight. 40. 45. 50. 55. 60. 65
(in kg)
Number of. 15. 40. 29. 21. 10. 5
Students
a) Find the percentage of students whose weight is more than 50 kg.
b) If the weight column provided is of mid values then find the percentage of students whose weight is more than 50 kg.
Answers
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a). 30% is the percentage of students whose weight is more than 50 kg.
b). 54.16% the percentage of students whose weight is more than 50 kg if the weight column provided is of mid values.
Step-by-step explanation:
a). Given that,
The total number of students = 15 + 40 + 29 + 21 + 10 + 5
= 120
While,
The number of students with more than 50kg weight = 21 + 10 + 5
= 36
∵ The percentage of students whose weight is more than 50 kg
= 36/120 * 100
= 30%
b). If the weight column provided is of mid values, then
The number of students with more than 50kg weight = 29 + 21 + 10 + 5
= 65
Therefore, the percentage would be = 65/120 * 100
= 54.16%
Learn more: find the percentage
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