Frequency Distribution and Variation. Prepared by E.G. Gascon. Frequency Distributions. Frequency distribution: Quantitative Data is a table that shows classes or intervals (frequency f of a class is the number of data entries in the class
Prepared by E.G. Gascon
There are several ways depending upon the version
Household Income Example
~99.7% of the data lie within 3 standard deviation of the mean(3 times the size of the SD on either side of the mean)
Standard Score, (z-score) represents the number of standard deviations a given value x falls from the mean .