Daily Practice

Higher

20th June 2025

5 questions · Higher tier · 360 questions in this band

1
Designing Questionnaires and Surveys
What is wrong with the question 'How old are you and do you smoke?'
2
Experimental Design
What is meant by a control variable?
3
Median Quartiles and IQR
Find the median of: 4, 7, 9, 12, 15.
4
Index Numbers
The price of milk was 0.80 pounds in the base year and 0.92 pounds this year. Find the index number for milk this year.
5
Frequency Tables and Tally Charts
A frequency table for test scores out of 10 shows: score 6 has frequency 5, score 7 has frequency 8, score 8 has frequency x, score 9 has frequency 3, and the total frequency is 25. Find x.

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