Correlations!

Question 1

Correlation

Answer 1

Determining the association between two variables

Zero correlation= co-variables not linked

Positive correlation= co-variables increase together

Negative correlation= as one co-variable increases, the other decreases

Question 2

Correlational hypothesis

Answer 2

States the expected association between the co-variables

eg: Age and beauty are positively correlated (pos correlation, directional hypothesis)

Question 3

Scattergrams

Answer 3

A correlation can be illustrated using a scattergram

Scatter of the dots indicate the degree of correlation between co-variables

Use a correlation coeffieicent to decide whether there is a meaningful correlation

Question 4

Correlation coefficient

Answer 4

A number between +1 and -1 that tells us how closely the co-variables in a correlational analysis are linked
(+1 is perfect positive correlation and -1 is a perfect negative correlation)

Use a statistical test to calc correlation coefficient

Question 5

Correlations str: trends

Answer 5

Used to investigate trends.

If a correlation is signif then further investiagtion is justified

If a correlation is not signif then you can probable rule out a causal relationship

Useful in psychological research

Question 6

Correlation lim: Cause and effect

Answer 6

Can’t determine cause and effect,

can only determine correlation but ppl assume causal relationships.

Causal connection may be bc of intervening variables (unkown variables which can explain who the co-variables are linked

Question 7

Correlation str: repeatability

Answer 7

procedures in a correlation can usually be easily repeated

= findings can be confirmed

Question 8

AO3: correlations

Answer 8

str: trend
str: repeatable
lim: cause and effect