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 median wage of the workers
Topic: Reflection and plotting
Previous-year question practice database
Answer
Solution diagram
Exam answer
Total workers: N = 80
Median position: N/2 = 40th observation
On the ogive, draw a horizontal line from cumulative frequency 40 to the curve and then a vertical line to the wage axis.
The corresponding wage is approximately ₹605.
Answer:
Median wage ≈ ₹605.
Explanation
For a less-than ogive, the median is the x-value corresponding to cumulative frequency N/2. Here N/2 = 40, and the graph gives approximately ₹605.
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