Podcast
Questions and Answers
Which type of statistical test is equivalent to the linear model $lm(y \sim 1)$ in R?
Which type of statistical test is equivalent to the linear model $lm(y \sim 1)$ in R?
- One-sample t-test (correct)
- Wilcoxon signed-rank test
- Paired-sample t-test
- Two-sample t-test
What does the linear model $lm(y2 - y1 \sim 1)$ in R predict?
What does the linear model $lm(y2 - y1 \sim 1)$ in R predict?
- The mean of y1 and y2
- The pairwise differences between y2 and y1 (correct)
- The product of y1 and y2
- The sum of y1 and y2
Which statistical test is equivalent to the linear model $lm(y \sim 1 + x)$ in R when the method is 'Pearson'?
Which statistical test is equivalent to the linear model $lm(y \sim 1 + x)$ in R when the method is 'Pearson'?
- Two-sample t-test
- Pearson correlation test (correct)
- Welch's t-test
- Spearman correlation test
Which of the following is a measure of overall variability in a dataset?
Which of the following is a measure of overall variability in a dataset?
What is the formula to calculate the standard deviation of a dataset?
What is the formula to calculate the standard deviation of a dataset?
What does the Central Limit Theorem state?
What does the Central Limit Theorem state?
What is the standard error of the mean?
What is the standard error of the mean?
Which formula is used to calculate a confidence interval?
Which formula is used to calculate a confidence interval?
Which effect size measure is independent of sample size?
Which effect size measure is independent of sample size?
What is the effect size when $r = .3$?
What is the effect size when $r = .3$?
What is the formula for calculating Cohen's d?
What is the formula for calculating Cohen's d?
Which statistical test is equivalent to the linear model $lm(y \sim 1 + G2)$ in R when the weights argument is specified?
Which statistical test is equivalent to the linear model $lm(y \sim 1 + G2)$ in R when the weights argument is specified?
What is the purpose of the function 'signed_rank' in R?
What is the purpose of the function 'signed_rank' in R?
What is the formula for calculating the mean of a dataset?
What is the formula for calculating the mean of a dataset?
What is the purpose of the function 'glm' in R?
What is the purpose of the function 'glm' in R?
