QMS 102 Lecture Notes - Lecture 4: Grater, Interquartile Range

• School: Ryerson University
• Department: Quantitative Methods
• Course: QMS 102
• Professor: Boza Tasic

Document Summary

Gives an overall picture of a set of numerical data. Can be summarized in terms of a ve-number summary. Outliers use common sense; question if the outlier is relevant or not as you can discard them if they don"t make sense. Left whisker ends at a min. value grater than the lif. Right whisker ends at a max. value less than the rif. Suspect outliers : data values that lie between the inner and outer fences. Outliers : data values that lie outside the outer fences. Right inner fence > rif = q3 + (1. 5 x iqr) Right outer fence > rof = rif + (1. 5 x iqr) Left inner fence > lif = q1 - (1. 5 x iqr) Left outer fence > lof = lif - (1. 5 x iqr)