Independent t-Test Exam 2

Question 1

Define bivariate analysis

Answer 1

analysis with two variables

Question 2

t statistic value

Answer 2

• As the difference between the means increases, the value of t increases
• As variability values increases, the value of t decreases
• As the number of patients in each group increases, the value of t increases

Question 3

When would you use an independent groups t-test?

Answer 3

• When you want to statistically compare means or proportions between two independent groups
• Variable that is compared is continuous

Question 4

What must you assume about the populations?

Answer 4

that they have the same variance

Question 5

What is the point estimate?

Answer 5

difference between two means

Question 6

What happens when the confidence interval contains zero?

Answer 6

would fail to reject the null