TABLE 12-20 Three New Different Models of Compact SUVs Have Just Arrived

question 103

Short Answer

TABLE 12-20
Three new different models of compact SUVs have just arrived at the market. You are interested in comparing the gas mileage performance of all three models to see if they are the same. A partial computer output for twelve compact SUVs of each model is given below:

You are told that the gas mileage population distributions for all three models are not normally distributed.
-Referring to Table 12-20, what are the degrees of freedom of the Kruskal-Wallis test statistic?

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Definitions:

Competition

An interaction between organisms or species, in which the fitness of one is lowered by the presence of another due to the shared consumption of a limited resource.

Beneficial

Refers to something that produces good or helpful results or effects.

Harmful

Refers to something causing damage or injury physically, mentally, or morally.

Species Diversity

A measure of biodiversity that reflects the number of different species as well as their relative abundance in a specific region or ecosystem.