Cards to help me study for S1 exams

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Grouped Frequency Distributions and Histograms

Class Width =  largest-smallest / number of groups wanted

Advantages = patterns are revealed leading to a conclusion

Disadvantages = Some detail is lost

Quantiles  Q1 = n/4 if this in a non-integer, use the next number, if it is an integer the value is between that one and the next.

                  Q2 = n/2

  Q3 = n x 3/4

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