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4MA1/2FR Jan 2020, Question 8: Tally Charts and Frequency Tables

Pearson Edexcel International GCSE Mathematics A 4MA1 · Paper 2FR (Foundation) · Calculator · 6 marks

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The question, in short

Complete a partly filled two-way table for 60 bricks by size and colour, then find two probabilities from the bag and from the large bricks.

Summarised in our own words. Use the official paper for the exact wording and the diagram.

Part (a) · 3 marks

Fill in all the missing cell and total values in the two-way table using the given numbers.

  1. 1Small total = 60 − 33 = 27
  2. 2Small orange = 27 − 7 - 14 = 6
  3. 3Large blue = 23 − 7 = 16
  4. 4Large yellow = 33 − 13 − 16 = 4
  5. 5Orange total = 6 + 13 = 19
  6. 6Yellow total = 14 + 4 = 18
  7. 7Check: 19 + 23 + 18 = 60
  8. 8Missing entries: 6, 27, 16, 4, 19, 18

Answer6, 27, 16, 4, 19, 18

Part (b) · 1 mark

State the probability that a brick chosen at random from the bag is blue.

  1. 1There are 23 blue bricks out of 60
  2. 2Probability = 23/60

Answer23/60

Part (c) · 2 marks

State the probability that a randomly chosen large brick is orange.

  1. 1There are 33 large bricks
  2. 213 of the large bricks are orange
  3. 3Probability = 13/33

Answer13/33

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