Podcast
Questions and Answers
What does it mean when a null hypothesis is rejected at a significance level of 0.01?
What does it mean when a null hypothesis is rejected at a significance level of 0.01?
- The result is less statistically significant than if it were rejected at 0.05.
- The result is more statistically significant than if it were rejected at 0.05. (correct)
- The result is not statistically significant.
- The result is equally statistically significant as if it were rejected at 0.05.
In null hypothesis significance testing, what should be done to discuss the size of an effect?
In null hypothesis significance testing, what should be done to discuss the size of an effect?
- Calculate and interpret the effect size. (correct)
- Reject the null hypothesis.
- Conduct more statistical tests.
- Increase the alpha level.
Which statistical test is commonly used to examine whether the difference in mean scores between two groups is statistically significant?
Which statistical test is commonly used to examine whether the difference in mean scores between two groups is statistically significant?
- ANOVA test
- Chi-square test
- T-test (correct)
- Regression analysis
What do researchers need to specify before conducting a statistical test?
What do researchers need to specify before conducting a statistical test?
Which test is suitable for examining differences among three or more groups, such as in factorial designs?
Which test is suitable for examining differences among three or more groups, such as in factorial designs?
What does a significance test in the NHST framework determine?
What does a significance test in the NHST framework determine?
What is the typical p-value threshold used in null hypothesis significance testing to reject the null hypothesis?
What is the typical p-value threshold used in null hypothesis significance testing to reject the null hypothesis?
What does the alpha value represent in null hypothesis significance testing?
What does the alpha value represent in null hypothesis significance testing?
Which of the following is the null hypothesis in the mind-reading experiment described?
Which of the following is the null hypothesis in the mind-reading experiment described?
What is the primary reason why increasing the sample size in the mind-reading experiment leads to a lower p-value?
What is the primary reason why increasing the sample size in the mind-reading experiment leads to a lower p-value?
Which of the following is the primary purpose of setting an alpha value in null hypothesis significance testing?
Which of the following is the primary purpose of setting an alpha value in null hypothesis significance testing?
Which of the following is the most important factor in determining the likelihood of rejecting a true null hypothesis (making a Type I error)?
Which of the following is the most important factor in determining the likelihood of rejecting a true null hypothesis (making a Type I error)?
What is the primary goal of any statistical test?
What is the primary goal of any statistical test?
What is the significance level or alpha level in hypothesis testing?
What is the significance level or alpha level in hypothesis testing?
If the calculated p-value is smaller than the chosen alpha level, what can be concluded?
If the calculated p-value is smaller than the chosen alpha level, what can be concluded?
What is the effect of a larger sample size on the likelihood of obtaining statistically significant results?
What is the effect of a larger sample size on the likelihood of obtaining statistically significant results?
What is the relationship between effect size and the likelihood of obtaining statistically significant results?
What is the relationship between effect size and the likelihood of obtaining statistically significant results?
What is the null hypothesis in statistical testing?
What is the null hypothesis in statistical testing?
