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Questions and Answers
What does the Pearson Correlation Coefficient (r) measure?
What does the Pearson Correlation Coefficient (r) measure?
- The strength of a linear association between two variables (correct)
- The difference in means between two groups
- The proportion mean of a continuous variable
- The statistical significance of an association
What does an r value of -1 or 1 indicate about the association between two variables?
What does an r value of -1 or 1 indicate about the association between two variables?
- Statistically insignificant association
- Perfect linear association (correct)
- Weak association
- No association
In the context of measuring association, what does 'null value' refer to?
In the context of measuring association, what does 'null value' refer to?
- Perfect association between the variables
- Zero association between the variables (correct)
- Uncertain association between the variables
- Weak association between the variables
Which statistical test is appropriate for comparing the means of two groups with continuous outcomes?
Which statistical test is appropriate for comparing the means of two groups with continuous outcomes?
Which statistical test can be used when both the exposure and outcome are binary?
Which statistical test can be used when both the exposure and outcome are binary?
What does a chi-square test indicate about the difference between groups?
What does a chi-square test indicate about the difference between groups?
When would you likely use a chi-square test instead of a two-sample z-test or Odds Ratio/Risk Ratio?
When would you likely use a chi-square test instead of a two-sample z-test or Odds Ratio/Risk Ratio?
What do scatter plots show patterns in?
What do scatter plots show patterns in?
What does the ANOVA test assess?
What does the ANOVA test assess?
In the context of chi-square testing, what does the null hypothesis state?
In the context of chi-square testing, what does the null hypothesis state?
What does the F-statistic in ANOVA represent?
What does the F-statistic in ANOVA represent?
When using a chi-square test, what does it mean if the p-value is less than the significance level?
When using a chi-square test, what does it mean if the p-value is less than the significance level?
In ANOVA, what does the alternative hypothesis (HA) claim?
In ANOVA, what does the alternative hypothesis (HA) claim?
What does a chi-square test assess?
What does a chi-square test assess?
What does ANOVA stand for in the context of biostatistics?
What does ANOVA stand for in the context of biostatistics?
In ANOVA, what does HA represent?
In ANOVA, what does HA represent?
What is the purpose of a Chi-Square test in biostatistics?
What is the purpose of a Chi-Square test in biostatistics?
What does Ho represent in the context of a Chi-Square test?
What does Ho represent in the context of a Chi-Square test?
Which statistical test generates an F-statistic?
Which statistical test generates an F-statistic?
In which type of exposure and outcome does ANOVA test for a significant difference in means?
In which type of exposure and outcome does ANOVA test for a significant difference in means?
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