Daily Practice

Foundation

11th August 2025

5 questions · Foundation tier · 282 questions in this band

1
Stem and Leaf Diagrams
A back-to-back stem-and-leaf diagram compares two classes' test scores. For stem 7, Class A (left side) has 3 leaves and Class B (right side) has 4 leaves. Which class had more students scoring in the 70s?
2
Histograms
A histogram has bars of equal width. True or false: the height of each bar represents the frequency for that class.
3
Venn Diagrams
Events A and B are mutually exclusive with P(A) = 0.3 and P(B) = 0.25. Find P(A or B).
4
Frequency Polygons
A frequency polygon has classes of unequal width: 0-10 and 10-30. Explain why comparing the heights of the two plotted points directly can be misleading.
5
Tree Diagrams
Three branches from a single point are labelled 0.4, 0.35 and x. Find x.

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