Below is the data on sales and advertising expenditure in millions for an organization. Draw a plot and trend line for sales and advertising expenditure. What can you say about the relationship between sales and advertising expenditure? Sales Advertising Expenditure 10      2 24.    4 20     5 30     6 38     7 32    8 50    10 48     12

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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.