Now that you know a little bit about variability, we are going to talk about the five number summary and box plots. The box plot is going to be a way of visualizing that 5 number summary. We are going to talk about how to determine outliers and we are going to be using conditional formatting in Excel. Finally, we are going to be talking about modified box plots which are going to be box plots where we exclude the outliers already. Box plots are useful because you could plot a single quantitative variable and you can compare it to 2 or more distributions easily. One of that cons is that you cannot see frequency.
Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.
This book provides a clear and methodical approach to essential statistical procedures. It clearly explains the basic concepts and procedures of descriptive and inferential statistical analysis. This book features a new emphasis on expressions involving sums of squares and degrees of freedom as well as a stronger stress on the importance of variability.