Skip to content

Course home

2.2.3 Central tendency, variation and standard deviation

2.2.3 Central tendency, variation and standard deviation

EasyMediumHard
1234567891011
Question 11

Eight values have mean 46.5. Seven of the values are

42, 44, 45, 47, 48, 50, 5142,\ 44,\ 45,\ 47,\ 48,\ 50,\ 5142, 44, 45, 47, 48, 50, 51

a.

Find the eighth value.

[2]
b.

Find the standard deviation of the eight values.

[3]
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.

Question bank