The correlation coefficient between two measures, which varies between 0 and 1, is a measure of the relative weight of the factors they share. For example, we all share half our genes with each of our parents, and for traits in which environmental factors have relatively little influence, such as height, the correlation between parent and child is

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Why do we need these normalizations? If you want to know the relationship between, for example, time spent in higher education and post-education salary, you don’t want to worry about whether “time spent” is measured using hours, days, months, or years; and you don’t want to worry about whether salary is measured using dollars, thousands of... See more

Correlation is a measure of how two variables are related. The most common type of correlation used in business is the Pearson correlation coefficient, a statistic between −1 and 1 that measures the linear relationship (think simple straight lines) between pairs of numbers shown on a scatter plot. Correlation can be positive, meaning an increase in

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