JAMB - Mathematics (2000 - No. 43)
The cumulative frequency curve represents the ages of ages of students in a school. What age group do 70% of the students belongs?
17.5 - 20.5
16.5 - 19.5
15.5 - 19.5
15.5 - 18.5
Giải thích
If the total number of students represents 100%, then 70% corresponds to the point on the graph where the cumulative frequency reaches 70
From the graph, find where the cumulative frequency line intersects the 70% mark. This typically corresponds to a specific age on the X-axis