Research

Question 1

In a paired t-test, what p value shows a statistically significant difference between the samples?

Answer 1

p < 0.05 (5%)

Question 2

In a paired t-test what does the p value represent?

Answer 2

The probability that the difference seen between the 2 groups has occurred by chance

Question 3

Sensitivity vs specificity

Answer 3

Sensitivity - how well a test identifies those with the disease (true positive)

Specificity - how well a test identities those without the disease (true negative)

Question 4

How to calculate sensitivity

How to calculate specificity

Answer 4

Sensitivity = true positive / (true positive + false negative)

Specificity = true negative / (true negative + false positive)