# This section covers all the different ways data can be understood and represented.

These topics are for GCSE Maths Level.

You'll be able to understand things like; Pie Charts, Scatter Graphs, Tables, Charts, Frequency Diagrams, Questionnaires, Probability, Line of Best Fit, Box Plots, Stem and Leaf Diagrams, Histograms, Mean, Median, Mode and Interquartile Ranges. Not bad really.

## Top Questions

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### whats a pie chart for?

By Lee Mansfield on the 11th of June, 2012

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### What is cumulative frequency?

By Alex Blanc on the 11th of June, 2012

## Topics

 Solve probability problems involving dependent events A* Use stratified sampling A Interpret statistical graphs and draw conclusions A Construct and interpret a histogram A Solve probability problems involving independent events A Compare two sets of data using averages B Construct and interpret a box plot B Construct and interpret a cumulative frequency diagram B Work out the median, quartiles and interquartile range B Find averages from grouped data C Use a line of best fit to estimate values on a scatter graph and describe the correlation C Draw a line of best fit on the scatter graph C Identify possible sources of bias in the design and use of data collection sheets & questionnaires C Specify hypotheses and test them C Use relative frequency to find probabilities C Create a tree diagram C Use a variety of different sampling methods C Calculate the mean for a frequency distribution D Construct an ordered stem-and-leaf diagram D Construct a frequency diagram D Draw and interpret pie charts D Draw a scatter graph by plotting points on a graph and interpret it D Classify and know the difference between various types of data D Design and use data collection sheets and questionnaires D Use a two-way table to work out probability D List all the possible outcomes of two events, using a probability space D Understand probabilities of mutually exclusive events D

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