EM-3015

Cumulative frequency curves

E Math · Secondary 4 · Medium · Cumulative frequency curves

A cumulative frequency graph shows the times, in hours, that 200 students spend on homework each week. The 70th percentile is at 9 hours. What fraction of the students spend at least 9 hours on homework weekly?

$\dfrac{3}{10}$
$\dfrac{7}{10}$
$\dfrac{2}{5}$
$\dfrac{1}{3}$

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