pre class reading question s

Question 1

whats the difference between sensitivity and specificity

Answer 1

sensitivity: how good a test is at determining a condition

specificity: how good a test is at differentiating who doesnt have a condition

Question 2

what is negative correlation

Answer 2

when one variable increases the other decreases

Question 3

does correlation imply causation

Answer 3

no `

Question 4

when should quasi experimental studies be used

Answer 4

when randomisation is not possible

Question 5

what is a t test

Answer 5

comparing 2 groups

Question 6

whats the difference between an intependent t test and a paired t test

Answer 6

independent: comparing 2 independent groups (control vs. treatment)
paired: comparing the same group at 2 diff times (pretest vs. post test)