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Missing value analysis

 

Calculate the missing number and missing rate for each variable in Titanic data.

A

1

=file("D://titanic.csv").import@qtc()

2

=A1.fname()

3

=A2.((y=~,A1.align@a([true,false],!eval(y))))

4

=A2.new(~:col,A3(#)(1).len():null_no,round(null_no/A1.len(),3):null_rate)

A2 Get field names

A3 The variables in A1 are divided into two groups according to whether they are missing

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A4 Count the number and proportion of missing groups in A3, obtain the missing number and missing rate of each variable.

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