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Correctly fluoridated drinking water poses which degree of risk?
Chi-Square Statistic
A statistical measure used to evaluate the differences between observed and expected frequencies in categorical variables.
Observed Frequencies
The number of times a particular value or event actually occurs in a dataset.
Expected Frequencies
In statistical analysis, these refer to the counts predicted by a probability model or theoretical distribution, used in the comparison of observed data for goodness-of-fit tests.
Contingency Table
A table often used in statistics to show the frequency distribution of variables, helping in the analysis of the relationship between them.
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