In this lesson, we are going to be covering bar graphs. First we are going to review all the frequency distributions that we have done so far. Then we are going to talk a little bit about bar graphs and how they are different. Mainly is that they involve categorical variables and looking at the frequency of each value. Then we are going to contrast bar graphs and histograms because they are going to look very similar to each other but there are very different ideas underlying them. We are going to talk about whether shape applies to bar graphs, central tendency, and spread, as well.
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.