Daily Practice

Higher

15th January 2025

5 questions · Higher tier · 360 questions in this band

1
Designing Questionnaires and Surveys
Rewrite the response options '0-5, 5-10, 10-15' so that they no longer overlap.
2
Experimental Design
Give one reason why participants should be assigned to groups at random.
3
Median Quartiles and IQR
For the ordered data 6, 9, 11, 14, 16, 18, 20, 23, 25, 28, find the interquartile range.
4
Index Numbers
An index number is 140 with a base value of 20. Find this year's value.
5
Frequency Tables and Tally Charts
A survey of favourite colours gives: Red 6, Blue 9, Green 4, Yellow 5. How many people were surveyed in total?

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