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2 Statistics

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Question 341

A cumulative-frequency table for 50 values is shown.

x≤x\leqx≤1020304050
Cumulative frequency417314450
a.

Find the frequency in 20<x≤3020<x\leq3020<x≤30.

[1]
b.

Identify the median class and the class containing the upper quartile.

[2]
c.

State one limitation of estimating quartiles from this grouped table.

[1]
Markscheme

2 Statistics Questions

  1. A Level
  2. /Maths
  3. /2 Statistics

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