correlation

Question 1

what is a correlation

Answer 1

a relationship between two co-variables

Question 2

what is a positive correlation

Answer 2

when one co variable increase, the other co-variable also increases

Question 3

what is a negative correlation

Answer 3

as one co variable increases the other co variable also decreases

Question 4

write the frame for a 1 tailed correlation alternate hypothesis

Answer 4

there will be a positive/negative relationship between…. and…..

Question 5

write the frame for a 2 tailed correlation alternate hypothesis

Answer 5

there will be a significant relationship between… and…

Question 6

write the frame for a null correlation hypothesis

Answer 6

there is will be no significant relationship between… and…

Question 7

what is the rule of thumb for correlation

Answer 7

the result has to be between -1 and 1

Question 8

what is good about correlation

Answer 8

1. they use quantitative data so fare easy to analyse and plot on a scatter graph
2. they’re good to use as a background before starting more complex research

Question 9

what is bad about correlation

Answer 9

it’s hard to establish cause and effect as there is no comparison between conditions

Question 10

what are the 4 steps before the formula for spearman’s rank

Answer 10

1. rank your scores separately
2. work out the difference between the ranks
3. square each difference
4. add together all of the D2 column

Question 11

does the calculated value have to be greater or less than the critical value

Answer 11

greater

Question 12

what is the parametric stat test for correlation

Answer 12

pearsons