4MA1/1F Jun 2024, Question 12: Averages from Frequency Tables

Pearson Edexcel International GCSE Mathematics A 4MA1 · Paper 1F (Foundation) · Calculator · 4 marks

The question, in short

From a frequency table for 30 students' weekly school lunches, calculate the mean, and use a 0.79 packed-lunch probability to find the chance Alex does not bring one.

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

Part (a) · 3 marks

Calculate the average number of school lunches per student using the frequencies given for 0 to 5 lunches.

10 × 2 = 0
21 × 5 = 5
32 × 11 = 22
43 × 7 = 21
54 × 4 = 16
65 × 1 = 5
70 + 5 + 22 + 21 + 16 + 5 = 69
869 ÷ 30 = 2.3

Answer2.3

Part (b) · 1 mark

Given the chance Alex brings a packed lunch is 0.79, determine the chance he does not.

11 − 0.79 = 0.21

Answer0.21

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4MA1/1F Jun 2024, Question 12: Averages from Frequency Tables

The question, in short

Part (a) · 3 marks

Part (b) · 1 mark

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