Exam 7: How Can I Tell If Scores Differ Between Two Groups Independent T Test

You have calculated that a dataset has between groups variance with a value of 15 and a within groups variance of 3. What would the calculated t statistic be, and do you think the analysis would be significant or not significant?

In the t equation, how is the top half of the equation calculated?

You run a study where there are 12 participants in one condition and 15 participants in the other. How many degrees of freedom would you have?

What is the mean for the "no mental health history" group?

You have calculated a t statistic of 2.5. The between groups variance was calculated as 10. What is the calculated value of the within groups variance?

What is the calculated t value?

You have calculated a t statistic of 6. The within groups variance was calculated as 3. What is the calculated value of the between groups variance?

Which of the following is the correct way to report a t test?

What is the value calculated for the top part of the t equation?

You run a study where there are 35 participants in one condition and 40 participants in the other. How many degrees of freedom would you have?

What is the value on the lower part of the equation that requires a square root calculation?

You have calculated that a dataset has between groups variance with a value of 4 and a within groups variance of 8. What would the calculated t statistic be, and do you think the analysis would be significant or not significant?

You calculate a t test where you have a two-tailed hypothesis, 5 degrees of freedom and an alpha level of .050. What is the critical value for this analysis?

Which of the following datasets is likely to be significant?

What is the sum of the raw scores (Σx₂) for the "mental health history" group?