Podcast
Questions and Answers
What is the consequence if the p-value is greater than the alpha level?
What is the consequence if the p-value is greater than the alpha level?
- We fail to reject the null hypothesis (correct)
- We cannot make a conclusion
- We reject the null hypothesis
- We accept the null hypothesis
What type of error occurs when the null hypothesis is true but rejected?
What type of error occurs when the null hypothesis is true but rejected?
- Type III error
- Type II error
- Type IV error
- Type I error (correct)
In hypothesis testing, what does a confidence interval not including the null value indicate?
In hypothesis testing, what does a confidence interval not including the null value indicate?
- We reject the null hypothesis (correct)
- There is a Type II error
- We accept the null hypothesis
- We fail to reject the null hypothesis
What is the consequence if the p-value is less than the alpha level?
What is the consequence if the p-value is less than the alpha level?
What happens if a Type II error occurs in hypothesis testing?
What happens if a Type II error occurs in hypothesis testing?
What is the purpose of the null hypothesis (Ho) in hypothesis testing?
What is the purpose of the null hypothesis (Ho) in hypothesis testing?
In the context of hypothesis testing, what does the alternative hypothesis (Ha) represent?
In the context of hypothesis testing, what does the alternative hypothesis (Ha) represent?
Which of the following best represents a null hypothesis (Ho) for the given Case 3 example?
Which of the following best represents a null hypothesis (Ho) for the given Case 3 example?
What is the significance level (α) for a 95% confidence level in hypothesis testing?
What is the significance level (α) for a 95% confidence level in hypothesis testing?
How is the rejection region used in determining statistical significance in hypothesis testing?
How is the rejection region used in determining statistical significance in hypothesis testing?
What is a major limitation of cross-sectional studies?
What is a major limitation of cross-sectional studies?
Why are case-control studies useful for rare outcomes?
Why are case-control studies useful for rare outcomes?
What is a limitation of case-control studies?
What is a limitation of case-control studies?
Why is it hard for cross-sectional studies to establish temporal relationships?
Why is it hard for cross-sectional studies to establish temporal relationships?
What type of study design would be most appropriate for identifying risk factors needing urgent attention?
What type of study design would be most appropriate for identifying risk factors needing urgent attention?
Which test is used to determine if all the means of different categories are equal to each other?
Which test is used to determine if all the means of different categories are equal to each other?
What does a chi-square test determine?
What does a chi-square test determine?
When is a two-sample t test used?
When is a two-sample t test used?
What does correlation (r) measure?
What does correlation (r) measure?
What do relative risk (RR) and odds ratio (OR) measure?
What do relative risk (RR) and odds ratio (OR) measure?
What is the 'null value' for measures like RR and OR?
What is the 'null value' for measures like RR and OR?
If a confidence interval for a Relative Risk (RR) spans the value of 1, what can be concluded about its statistical significance?
If a confidence interval for a Relative Risk (RR) spans the value of 1, what can be concluded about its statistical significance?
What does it mean if the p-value is less than 0.05 in hypothesis testing?
What does it mean if the p-value is less than 0.05 in hypothesis testing?
What test would you use to compare two sample proportions to each other?
What test would you use to compare two sample proportions to each other?
In a one-sample z test, what does the independent variable represent?
In a one-sample z test, what does the independent variable represent?
What does Sensitivity measure in a screening test?
What does Sensitivity measure in a screening test?
What does Specificity measure in a screening test?
What does Specificity measure in a screening test?
What does Positive Predictive Value (PPV) measure?
What does Positive Predictive Value (PPV) measure?
What is a determinant of Positive Predictive Value (PPV)?
What is a determinant of Positive Predictive Value (PPV)?
What does Negative Predictive Value (NPV) measure?
What does Negative Predictive Value (NPV) measure?
What is the main advantage of a cohort study design?
What is the main advantage of a cohort study design?
What distinguishes a case-control study from a cohort study?
What distinguishes a case-control study from a cohort study?
In an outbreak investigation, what can the shape of an epidemic curve help us understand?
In an outbreak investigation, what can the shape of an epidemic curve help us understand?
Which study design provides stronger evidence as you move up the pyramid of evidence?
Which study design provides stronger evidence as you move up the pyramid of evidence?
What is a key component of outbreak investigations?
What is a key component of outbreak investigations?
Why are cohort studies particularly useful for investigating rare exposures?
Why are cohort studies particularly useful for investigating rare exposures?
What type of study design focuses on comparing the incidence of disease in exposed and unexposed groups?
What type of study design focuses on comparing the incidence of disease in exposed and unexposed groups?
In an outbreak investigation, what distinguishes confirmed from suspected cases?
In an outbreak investigation, what distinguishes confirmed from suspected cases?
What does the shape of an epidemic curve primarily help to understand during an outbreak investigation?
What does the shape of an epidemic curve primarily help to understand during an outbreak investigation?
