A customer list from a financial services company is shown below:
A data analyst wants to create a likely-to-buy score on a scale from 0 to 100, based on an average of the three numerical variables: number of credit cards, age, and income. Which of the following should the analyst do to the variables to ensure they all have the same weight in the score calculation?
- Recode the variables.
- Calculate the percentiles of the variables.
- Calculate the standard deviations of the variables.
- Normalize the variables.
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