Statistics

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A-Level Maths Mind Map on Statistics, created by lucy.greene on 26/03/2014.
lucy.greene
Mind Map by lucy.greene, updated more than 1 year ago
lucy.greene
Created by lucy.greene over 10 years ago
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Resource summary

Statistics
  1. Mathematical models in probability and statistics
    1. A mathematical model is a simplification of a real world situation.
      1. Advantages: quick and easy to produce, can simplify a complex situation, they enable predictions to be made about the future, help provide control
        1. Disadvantages: only give a partial description of real situation, only work for restricted range of values.
        2. Representation and summary of data - location
          1. a variable can take any value in a given range
            1. a variable that can take only specific values in a given range is a discrete
              1. a grouped frequency distribution consists of classes and their related class frequencies
                1. the mode or modal class is the value or class that occurs most often
                  1. the median is the middle value of an ordered data set
                  2. Representation and summary of data - measures of dispersion
                    1. Representation of data
                      1. Probability
                        1. Correlation
                          1. Regression
                            1. Discrete random variables
                              1. The normal distribution
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