22. Statistics
iGCSE (2021 Edition)
22.09 Grouped data (Extended)
Interactive practice questions
Find the class centre for the class interval $17$17-$22$22.
Easy
< 1min
Find the class centre for the class interval $19\le t<23$19≤t<23 where $t$t represents time.
Easy
< 1min
Some data is grouped into class intervals.
Easy
< 1min
If the range (difference between the highest and lowest scores) of a set of continuous data is $20$20, what is the size of each class interval if we group the data into:
Easy
2min
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