Lesson 9 - probability and significance

Question 1

level of statistical significance

Answer 1

the level at which the decision is made to reject the H0 in favour of H1 . It states how sure we can be that the IV is having an effect on the DV and its not due to chance

Question 2

Chance defined

Answer 2

something has no real cause, it just happens

Question 3

what are significance levels

Answer 3

from results gained from our experiment we need to see if there is a real difference between the two sets if data and how certain we are that there is a real difference

Question 4

what is probability

Answer 4

a numerical measure that determines whether our results are due to chance or if there is a real difference

Question 5

why is p<0.05

Answer 5

not too strict ,not too lenient
minimised chances of making type 1 or 2 errors
normally used when there is a directional line tailed hypothesis that has been clearly stated in the research

Question 6

type 1 error

Answer 6

reject H0 and accept H1 when you should’ve accepted H0 bcs results weren’t significant

Question 7

type 2 error

Answer 7

reject H1 and accept H0 when you should’ve accepted H1 bcs results were significant