STAT W21 Lecture Notes - Lecture 8: Negative Number
Document Summary
R is the average product of x and y, after putting x and y on an equal footing by transforming. Standard units: a way of putting different kinds of observations on the same scale them to standard units - standard deviations above the mean. The idea is to replace a datum by the number of standard deviations it is above the. When a list is transformed to standard units, the mean of the new list is zero and the sd mean of the data of the new list is one. Affine transformations mean are negative in standard units units and y in standard units. Values that are larger than the mean are positive in standard units. values that are less than the. Correlation coefficient of two variables x and y is the average of the product of x in standard. Correlation coefficient doesn"t change if the lists are transformed: The same number is added to every element of either list.
