You are an education researcher interested in studying if race or ethnicity affects the severity of punishment children receive.  Through open records, you are able to collect from several high schools the length of suspensions given to kids for fighting along with the race/ethnicity of the child.  The state of Texas divides school children into one of 7 race/ethnicity groups: African American, American Indian, Asian, Hispanic, Pacific Islander, White, or Multiracial.  You want to compare the average length of suspension among these 7 groups.  Which statistical test would be best to determine if there is a significant difference in the severity of punishment among the different groups?     one-sample t-test     related samples t-test     independent samples t-test     ANOVA

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Counting Principles

In statistics, the counting principle can be said to be the concept in which the quantity of an item is determined. There can be a single item, or a group of items, or items that are related to each other. In every possible set of items, the quantity of the possible item groups or their sorting measures can be determined with counting principles.