Chi-square Library services at the Fairmont College did a survey about books (by subject) in circulation. The director used library records to take a random sample of 888 books checked out last term and classified the books in the sample by subject. The results are shown below: *view table below* a) use descriptive statistics to represent the data b) test at the 5% level of significance, the claim that the subject distribution fits the distribution of books checked out by students.

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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.