GraphModerate1 mark
7(ii)
Using a graph paper, draw an ogive for the following distribution which shows a record of weight in kilograms of 100 students. Use your ogive to estimate the following:
percentage of students whose weight is 60 kg or more.
Topic: Histogram / ogive / graphical representation
Previous-year question practice database
Answer
Solution diagram
Exam answer
From the ogive at 60 kg: cumulative frequency = 70.
Students weighing 60 kg or more = 100 − 70 = 30.
Percentage = 30/100 × 100 = 30%.
Answer: 30%.
Explanation
Subtract the cumulative frequency below 60 kg from the total, then convert to a percentage.
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