Stage 9 - Q1 - 4 marks
20247
Draw a frequency polygon for the table. Use class midpoints and label both axes.
Time (min)
Frequency
\(10\le t<20\)
4
\(20\le t<30\)
8
\(30\le t<40\)
13
\(40\le t<50\)
5
\(50\le t<60\)
3
Hint
Find the middle of each interval before plotting.