Khan Academy
SUMMARIZING QUANTITIVE DATA Statistics include descriptive statistics & inferential statistics. In this chapter, we are going to take about descriptive statistics. PART 1 Measuring center in quantitive data PART 2 Interquartile range(IQR) PART 3 Variance and standard deviation of population PART 4 Variance and Standard Deviation of a Sample PART 5 Box and Whisker Plots PART 6 Other Measures of Spread PART 1 Measuring center in quantitive data 1. Average: to measure central tendency, describe the center of a set of data 2. Mean, median, and mode are three kinds of “Averages”. They each tries to