The Grangeville Power Company has four classifications for its customers. For each customer classification, the company tracks the total amount of electricity used during the year. Which of the following types of graphs would be most appropriate to use? A) A horizontal bar chart B) A vertical bar chart C) Both A and B would be appropriate. D) A histogram
The Grangeville Power Company has four classifications for its customers. For each customer classification, the company tracks the total amount of electricity used during the year. Which of the following types of graphs would be most appropriate to use?
A) A horizontal bar chart
B) A vertical bar chart
C) Both A and B would be appropriate.
D) A histogram
A horizontal bar chart is used when the data is nominal in nature that is, categorical data which can not be measured numerically but can be counted in terms of frequencies.
A vertical bar chart is used when the data represents different values that different categories can take, that is ordinal variables. It is used to compare different categories of data
A histogram is used when the data is completely quantitative and represents a frequency distribution for various class intervals for a single variable.
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