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NZAMT NZQA NZ Grapher NZ Maths Census at School Study It

3.9 Bivariate HOME | Achievement Objectives | Overview | Data sets & Variable Types | Introduction | Scatter plots | Excel | iNZight | Correlation Coefficient & Linear Model | The effect of Groups & Unusual Values | Predictions | Causality | Non-Linear Models | Discussion & Conclusion | Report Writing

Using iNZight to make a Scatterplot

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Scatterplots in iNZight

Basic Scatterplot

Code More Variables

Code More Groups

Adding Jitter

       
Adding a Trend Line Summary of Results Scatter plots matrix  
 

More ideas & information on the iNZight tips & tricks page

 

Basic data input and drag-drop variables to make a scatterplot

More things to do

Code More variables

 

 

 

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Code More Continuous Variables

Basic Plot

Coloured levels

Resized levels

How? Create a scatter plot, then...

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Code More Groups

Two groups can be analysed separately "add a variable to 'subset of' eg we can group according two islands

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Adding Jitter

When multiple data points may overlap and look like the same point. To separate them visually 'add jitter'

Note: Jitter only changes the graph, it has no effect on any modeling equations

 

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Scatterplots matrix (iNZight 2.0)

1) Load data into iNZight Data set

2) Advanced, Quick Explore, Pairs

3) Select variables
(as many continuous as wanted)

 

4) Plot

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More ideas & information on the iNZight tips & tricks page
 

 

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