The article “Statistical Modeling of the Time Courseof Tantrum Anger” (Annals of Applied Stats, 2009:1013–1034) discussed how anger intensity in children’s tantrums could be related to tantrumduration as well as behavioral indicators such asshouting, stamping, and pushing or pulling. The followingfrequency distribution was given (and alsothe cor responding histogram):02,2 : 136 22,4: 92 42,11: 71112,20: 26 202,30: 7 302,40: 3Draw the histogram and then comment on any interestingfeatures.

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Bar Graphs

A bar graph is a chart or graphical representation of data. A bar chart, also known as a bar graph, is a graph or chart that displays categorical data using rectangular bars with heights or lengths equal to the values they represent. Typically, bar graphs show categorical and numerical variables grouped in class intervals. A bar graph is useful for comparing and analyzing a set of data.