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2.2.3 Central tendency, variation and standard deviation

2.2.3 Central tendency, variation and standard deviation

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Question 1
35%

Adam is measuring the heights in cm of his tomato plants.

Height (cm)Frequency
140<h≤150140 < h \leq 150140<h≤1507
150<h≤160150 < h \leq 160150<h≤16010
160<h≤170160 < h \leq 170160<h≤17015
170<h≤180170 < h \leq 180170<h≤18019
180<h≤200180 < h \leq 200180<h≤2009
a.

Use linear interpolation to estimate the median height.

[2]
b.

Estimate the mean height.

[2]
c.

Estimate the standard deviation.

[2]
Markscheme

2.2.3 Central tendency, variation and standard deviation Questions

  1. A Level
  2. /Maths
  3. /2.2.3 Central tendency, variation and standard deviation

39 exam-style questions on AQA A Level Maths 2.2.3 Central tendency, variation and standard deviation. Each one has a worked solution and a mark scheme showing where the marks go.

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