INBDE (Integrated National Board Dental Examination) Practice Exam

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Which test measures the statistical difference between two means?

  1. T-test

  2. Chi-squared test

  3. ANOVA

  4. Linear regression

The correct answer is: T-test

The correct answer is the t-test. The t-test is specifically designed to compare the means of two groups and determine if there is a statistically significant difference between them. It is commonly used in research and hypothesis testing to assess if the means of two samples are truly different or if any observed difference is due to chance. The other options are not relevant for comparing the means of two groups: - Chi-squared test is used for analyzing categorical data to see if there is a significant association between two variables. - ANOVA (analysis of variance) is used to compare three or more groups to see if there is a statistically significant difference between their means. - Linear regression is a statistical method used to model the relationship between a dependent variable and one or more independent variables.