GraphModerate1 mark
10(b)
The daily wages of 80 workers in a project are given below. Use a graph paper to draw an ogive for the above distribution. (Use a scale of 2 cm = Rs. 50 on x-axis and 2 cm = 10 workers on y-axis). Use your ogive to estimate:
the numbers of workers who earn more than Rs. 625 daily
Topic: Reflection and plotting
Previous-year question practice database
Answer
Solution diagram
Exam answer
From the cumulative-frequency graph at ₹625, approximately 52 workers earn ₹625 or less.
Total workers = 80.
Workers earning more than ₹625 ≈ 80 − 52 = 28.
Answer: approximately 28 workers.
Explanation
Read the cumulative frequency at ₹625 and subtract it from the total 80.