Foundation
24th January 2025
- 1Grouped Frequency Tables
A grouped frequency table has intervals of unequal width, 0 <= x < 10 and 10 <= x < 40. Explain why this could make the table misleading when drawing a histogram.
- 2Pictograms
A pictogram key shows 1 symbol = 4 books. A row has 2 and a half symbols. How many books does the row represent?
- 3Probability Basics and the Probability Scale
A bag has 4 yellow and 6 white balls. What is P(picking a yellow ball)?
- 4Bar and Composite Bar Charts
A bar chart uses a scale where each small square represents 2 people. A bar is 7 squares tall. How many people does the bar represent?
- 5Mutually Exclusive Events
A card is drawn at random from a normal 52-card pack. Find P(drawing a King or a Queen).
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