Statistical Tests Can Provide More Data Analysis Chapter

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Pearson r can tell us how strong the relationship is between two variables. The closer to 1, the stronger the relationship is and the closer to 0 the weaker the relationship is. If the Pearson r value is positive, the relationship is direct, and if negative, the relationship is inverse. In our hypothetical case study, the r value is negative and thus the older a worker gets the less engagement they demonstrate with the customers.

The chi-squared measure indicates how likely two variables are to be independent of each other (such as a person's favorite color and their last name) or dependent on each other (such as a person's race and his/her income).

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In this case, the value of chi-square at less than .05 indicates that the possibility that gender and customer engagement are randomly related is less than 5%.

Important to this analysis are two concepts. A result is statistically significant if there is little chance that variables are related by chance. Substantive (or meaningful) significance addresses the ways in which a statistical finding might be meaningful to….....

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