Cumulative Frequency Diagram, Median, Lower & Upper Quartile, Interquartile Range, Percentile

We learn how to draw and use a cumulative frequency diagram to find the median, lower and upper quartiles, the interquartile range, 90th percentile and how to use the diagram to draw a box plot. ******** TIME STAMPS / CHAPTERS ******** 00:00 Introduction 00:50 Cumulative Frequency Column 02:13 Plotting Points & Curve for Cumulative Frequency Diagram 04:33 Median Value 05:55 Lower & Upper Quartile 07:37 Interquartile Range 08:02 Median at n/2 or (n+1)/2 ? 09:03 Box Plot 10:22 90th Percentile (How to Find it) 11:54 Percentage Measuring Less than 32cm