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Consider the following dataset: data=[1,2,2,2,4,4,5,6,8] We want to use a regression tree to split the dataset into two smaller branches. Use the technique of variance
Consider the following dataset:
data=[1,2,2,2,4,4,5,6,8]
We want to use a regression tree to split the dataset into two smaller branches. Use the technique of variance deduction to decide which splitting is more likely to be picked
Split1:[1,2,2,2,4,4] [5,6,8]
Split2:[1,2,2,2][4,4,5,6,8]
What is the weighted variance of the first split, rounded to two decimal places?
note:Use the formula var=(1/n)(x1-mu)^2+(x2-mu)^2+....(xn-mu)^2
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