Daily Practice

Foundation

15th August 2024

5 questions · Foundation tier · 282 questions in this band

1
Estimated Mean from Grouped Data
A table has class intervals with frequency x midpoint totals of 45, 120, 90 and frequencies 5, 8, 6. Find the estimated mean.
2
Sampling Methods
State one disadvantage of quota sampling.
3
Collecting Data
A student uses figures from a government website for her project. Is this primary or secondary data?
4
Comparing Data Sets
Class A has a mean test score of 62 and Class B has a mean of 58. Which class did better on average?
5
Combined Mean
A class of 15 students has a mean score of 30. When combined with another class of 25 students, the combined mean of all 40 students is 40. Find the mean score of the second class.

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