Podcast
Questions and Answers
What is the probability of making a Type I error in a significance test at level α?
What is the probability of making a Type I error in a significance test at level α?
- 1 – power
- α (correct)
- β
- 1 – α
What is another name for a Type II error?
What is another name for a Type II error?
- Power
- False Positive
- False Negative (correct)
- Significance Level
How would you calculate the power of a test against a particular alternative value?
How would you calculate the power of a test against a particular alternative value?
- (1 – α) / β
- α
- 1 – β (correct)
- β
Which of the following represents a correct null hypothesis result?
Which of the following represents a correct null hypothesis result?
What does the significance level α represent in hypothesis testing?
What does the significance level α represent in hypothesis testing?
How are Type I and Type II errors related to the power of a statistical test?
How are Type I and Type II errors related to the power of a statistical test?
What do boxplots and Q-Q plots help us check for?
What do boxplots and Q-Q plots help us check for?
Which of the following is an important consideration when conducting one-sample testing procedures?
Which of the following is an important consideration when conducting one-sample testing procedures?
What does the significance level (α) of a test represent?
What does the significance level (α) of a test represent?
In statistical testing, what is the recommended threshold for statistical power?
In statistical testing, what is the recommended threshold for statistical power?
What does the power of a statistical test refer to?
What does the power of a statistical test refer to?
If we repeatedly use a 5% significance test when the null hypothesis is true, what percentage of times will we be correct?
If we repeatedly use a 5% significance test when the null hypothesis is true, what percentage of times will we be correct?
What is the purpose of the alternative hypothesis Ha in significance tests?
What is the purpose of the alternative hypothesis Ha in significance tests?
In the context of determining if an email is spam, what is a Type I error?
In the context of determining if an email is spam, what is a Type I error?
How does the power of an experiment change if the sample data has less scatter/variation?
How does the power of an experiment change if the sample data has less scatter/variation?
Which error occurs when we fail to reject the null hypothesis (withhold judgment) when in fact the alternative hypothesis is true?
Which error occurs when we fail to reject the null hypothesis (withhold judgment) when in fact the alternative hypothesis is true?
What does a Type II error represent in a significance test?
What does a Type II error represent in a significance test?
How are Type I and Type II errors related to each other in significance tests?
How are Type I and Type II errors related to each other in significance tests?
