The cumulative frequency curve below illustrates the marks obtained, out of $100$, by $160$ stud

Question

The cumulative frequency curve below illustrates the marks obtained, out of $100$, by $160$ students in a Mathematics test. Use the graph to estimate the median mark, interquartile range, $90^{\mathrm{th}}$ percentile, number of students who scored more than $60$. Given that $40\%$ of the students failed the test, find the least marks a student must obtain to pass the test.

Accepted Answer

(a)(i) $41$ marks; (ii) $16$ marks; (iii) $59$ marks; (iv) $14$ students. (b) $37$ marks.

Statistical Analysis of Continuous Frequency Distributions

Statistical Analysis of Continuous Frequency Distributions

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