Skip to content

Course home

2.2 L: Data presentation and interpretation

2.2 L: Data presentation and interpretation

EasyMediumHard
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748
Question 40

The annual mileage of each of 400 cars is recorded. For these cars, x x\,x is the annual mileage in thousands of miles, and

∑x=4800\sum x = 4800∑x=4800 and ∑x2=61 200\sum x^2 = 61\,200∑x2=61200

a.

Calculate the mean annual mileage of these cars.

[1]
b.

Calculate the standard deviation of the annual mileage of these cars.

[2]
Markscheme

2.2 L: Data presentation and interpretation Questions

  1. A Level
  2. /Maths
  3. /2.2 L: Data presentation and interpretation

244 exam-style questions on AQA A Level Maths 2.2 L: Data presentation and interpretation, covering 2.2.1 Single-variable data diagrams, 2.2.2 Scatter diagrams and correlation, 2.2.3 Central tendency, variation and standard deviation, 2.2.4 Outliers and cleaning data, and 2.2 L: Data presentation and interpretation. Each one has a worked solution and a mark scheme showing where the marks go.

Question bank