Daily Practice

Foundation

11th April 2025

5 questions · Foundation tier · 282 questions in this band

1
Histograms
A histogram of ages has 5 equal-width bars covering 0-10, 10-20, 20-30, 30-40, 40-50 with heights 3, 7, x, 9, 2, and a total of 35 people. Find x.
2
Venn Diagrams
Using the pupils in the previous question, find P(likes football only).
3
Frequency Polygons
A class interval is 20-30 with frequency 8. Give the coordinates of the point plotted for this class.
4
Tree Diagrams
A box has 3 faulty bulbs out of 10. Two bulbs are chosen without replacement. Find the probability at least one is faulty.
5
Cumulative Frequency
A cumulative frequency graph for 80 data values is used to estimate the median. At what cumulative frequency value do you read across to the curve?

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