Synopsis
1 Notation and conventions 9
1.0.1 Background Information........................................................................ 10
1.1 Acknowledgements................................................................................................. 11I Describing Datasets
2 First Tools for Looking at Data 13
2.1 Datasets....................................................................................
................................... 13 2.2 What's Happening? - Plotting Data................................................................. 152.2.1 Bar< Charts.................................................................................................... 16
2.2.2 Histograms................................................................................................... 16
2.2.3 How to Make Histograms...................................................................... 17
2.2.4 Conditional Histograms.......................................................................... 19
2.3 Summarizing 1D Data.................................
........................................................... 192.3.1 The Mean...................................................................................................... 20
2.3.2 Standard Deviation................................................................................... 222.3.3 Computing Mean and Standard Deviation Online...................... 26
2.3.4 Variance......................................................................................................... 26
2.3.5 The Median.................................................................................................. 27
2.3.6 Interqu
artile Range.................................................................................. 292.3.7 Using Summaries Sensibly.................................................................... 30
2.4 Plots and Summaries............................................................................................. 31
2.4.1 Some Properties of Histograms.......................................................... 312.4.2 Standard Coordinates and Normal Data......................................... 34
2.4.3 Box Plots....................................................................................................... 38
2.5 Whose is bigger? Inves
tigating Australian Pizzas...................................... 392.6 You should.................................................................................................................. 43
2.6.1 remember these definitions:................................................................. 43
2.6.2 remember these terms............................................................................ 43
2.6.3 remember these facts:............................................................................. 43
2.6.4 be able to...................................................................................................... 43
3 Looking at Relationships
473.1 Plotting 2D Data...................................................................................................... 47
3.1.1
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