# GCSE Statistics Chapter 4 Summary- Summarising Data

After completing this chapter, you will be able to;

- Work out measures of central tendency;
- Find the mean, mode and median of raw data given as a list or as a frequency distribution
- Estimate the mean and median of a grouped frequency distribution and identify the modal class
- Understand the effects of transformations of data on the averages
- Understand when each of these averages is appropriate
- Calculate the weighted mean

- Work out measures of dispersion;
- Work out the range of data given as a list or frequency distribution
- Work out quartiles and percentiles
- Draw box plots
- Identify outliers
- Calculate and use variance and standard deviation
- Compare distributions of data

- Use simple index numbers, chain base index numbers and weighted index numbers;
- Know about the retail prices index.

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- Created by: Lottie_Anderson
- Created on: 08-12-12 12:00

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