Create a statistical parameters chart and data distribution model
While your data sheet is activated, select "Histograms" from "Modeling" menu .
"Model Setting" window will be appeared.
Select the data columns you intended to use as X, Y, Z and W .
There is some initial statistical information about your data file here.
You may intend to use data collected from districted area.
Set your data limits here. Default values cover all data, recorded to the active data sheet .
You could reload default values by clicking refresh signs.
If you want to remove suspected data or highly suspected data from your process, check the related checkbox here .
There is another tab labeled "Histograms". You can set " Number of Groups" for histograms and Chart type .
There are six types of charts provided by Gridat :
Cumulative Frequency histogram,
Relative Frequency histogram,
Relative Cumulative Frequency histogram,
Probability Plot and
Normalized Probability chart.
As you know last two types are important to decide about the data distribution model.
Let's have an example, select "Relative Frequency" and click Ok.
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