GraphModerate1 mark
7(b)
The table shows the distribution of the scores obtained by 160 shooters in a shooting competition. Use a graph sheet and draw an ogive for the distribution. (Take 2 cm = 10 scores on the X-axis and 2 cm = 20 shooters on the Y-axis). Use your graph to estimate the following:
The number of shooters who obtained a score of more than 85%.
Topic: Reflection and plotting
Previous-year question practice database
Answer
Solution diagram
Exam answer
From the ogive at score 85, cumulative frequency is approximately 149.
Total shooters = 160.
Shooters scoring more than 85 ≈ 160 − 149 ≈ 11.
Answer: approximately 11 shooters.
Explanation
Read the cumulative frequency at score 85, then subtract it from the total number of shooters.