each of the hypothetical data sets, determine whether a bar graph or a pie chart

Question

each of the hypothetical data sets, determine whether a bar graph or a pie chart would be an appropriate way to display the data. In some cases, both types of graphs may be appropriate. For the percent of individuals with each of the following natural eye colors: brown, blue, green, hazel, and other the population density of each of the 50 states in the United States the number of college students who play the guitar, the piano, or the trombone the number of K-12 schools that are public compared to the number of private and charter schools Answer Bank bar graph pie chart

Explanation / Answer

Bar diagrams are used for series varying either with time or space. In this method bars of equal width are taken for the different items of the series, the length of a bar representing the value of the variable concerned. It is preferable to tale the bars horizontally for data varying over space and vertically in the case of a series varying over time.

When the values of a variable are given for a number of categories , we may be interested in the percentages rather than in the absolute values ,for the percentages are expected to give a better relative importance of each class. For this purpose we use a pie chart.

Here.

A.here already the percentage value is given for a particular variable that is eye color in different categories. So pie chart would be apt.

B.population density of 50 regions are given that is variable varying over space. Also it would be cumbersome.to.represent 50 regions as 50 parts in a pie chart. So bar graph would be apt.

C.here both bar graph and pie chart can be used.the data is variable over space and if represented in pie chart would also give a good relative measure.

D. Here the number of K school that are public are needed to be observed compared to the number of private and charter schools, that is it is a relative measure. Hence pie chart would be the appropriate.

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