parametric test- related

Question 1

why use related T test?

Answer 1

• repeated design
  -interval data

Question 2

example of alternative hypothesis

Answer 2

“there is a reduction in heart rate activity when comparing heart rate before and after CBT” directional one tailed

Question 3

example null hypothesis

Answer 3

“there’s no difference in heart rate activity comparing heart rate before and after CBT

Question 4

what is step 1 ? the table of data

Answer 4

-calc the differences between scores for condition A and B
- square each difference
-add up the values in the D colum to give sum of D
-add up the values in the d squared colum to give sum of D2

Question 5

step 2?

Answer 5

• work out the value of T
  -use formula in folder

Question 6

step 3?

Answer 6

• calculated and critical values
  -one tailed or two, 0.05? df?

Question 7

step 4 what is the significance?

Answer 7

• if calculated value of T is greater than the critical value the result is significant
• we can reject the null hypothesis

Question 8

look in revision folder for diagrams