The following data represent the ages of award winners for best actor and best actress in a leading role for the 20 years from 1985 to 2004. Answer parts (a) - (b) below. Full data set D Best Actor Ages Best Actress Ages 49 36 36 43 30 37 44 24 35 25 34 47 30 27 50 32 28 47 62 44 38 53 51 37 64 42 40 30 22 73 31 63 53 46 51 25 37 34 27 (a) Construct an ordered back to back stem-and-leaf display. Best Actor Age Best Actress Age 3

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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.