The following graph was drawn using a very popular spreadsheet program in an attempt to show the frequencies of observations in four hypothetical groups. Before reading further, estimate by eye the frequencies in each of the four groups.

a. Identify two features of this graph that cause it to violate the principle “Make patterns in the data easy to see.”

b. Identify at least two other features of the graph that make it difficult to interpret.

c. The actual frequencies are 10, 20, 30, and 40. Draw a graph that overcomes the problems identified above.

Transcribed Image Text:

40 35 30 25 20 15 10 in Group 1 Group 2 Group 3 Group 4