How to do logarithmic transformations

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AP Statistics › How to do logarithmic transformations

Questions 1 - 2
1

What transformation should be done to the data set, with its residual shown below, to linearize the data?

Graphic residual analysis 6

take the log of the dependent variable

multiply the dependent variable by a constant k.

Add to the y-value of each data point

multiply the independent variable by

Nothing, the data set is already linear

Explanation

Taking the log of a data set whose residual is nonrandom is effective in increasing the correleation coefficient and results in a more linear relationship.

2

Explanation

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