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Edexcel 1MA1HigherNon-calculatorS3 Histograms

Question 1 · 5 marks

Spec and skills
  • Paper scope: Paper 1: non-calculator practice
  • Spec S3
  • Spec S4
  • Original practice question
  • Answer and supported method checks
The incomplete table gives information about the waiting times of 65 patients.
Table of waiting times for 65 patients, with gaps. 0 < t ≤ 10: frequency 8. 10 < t ≤ 20: frequency density 1.4. 20 < t ≤ 30: frequency 18. 30 < t ≤ 50: frequency density 0.8. 50 < t ≤ 80: frequency 9.
Waiting time (t minutes)FrequencyFrequency density
0 < t ≤ 108–
10 < t ≤ 20–1.4
20 < t ≤ 3018–
30 < t ≤ 50–0.8
50 < t ≤ 809–
(a)
Show that the frequencies are consistent with a total of 65.
2 marks

Put the argument in order.

  1. Tap a step below