Lesson 5: Standardizing
Lesson 5: Standardizing
 If concerned with proportion less than or greater than a certain value, we should use relative frequencies
 Smaller bins can provide more accurate details on histograms, but bin sizes too small, can hide shape of distribution
 Continuous distribution
 An equation that allows you to calculate proportion between any two values on xaxis of distribution
 Area of normally proportionally distributed data will always be "1" or 100%

z score
 number of standard deviations away from the mean on the xaxis
 Formula:
z = (x  mu) / std_dev
 Negative zscores are to the left of the mean (less than the mean)
 Standardize distribution
 converting the mean to 0  shift the distribution left or right
 standard deviation becomes 1