CORRELATION AO1 & AO3

Question 1

correlation

Answer 1

illustrates the strength and direction of an association between two co-variables

Question 2

scattergram

Answer 2

one co-variable on the x-axis, the other is on the y-axis

Question 3

positive correlation

Answer 3

co-variable increases together

Question 4

negative correlation

Answer 4

one co-variable increases, the other decreases

Question 5

zero correlation

Answer 5

no relationship between variables

Question 6

difference between correlation and experiment

Answer 6

in am experiment the researcher manipulates the IV and records the effect on the DV. In a correlation there is no manipulation of variables so cause and effect cannot be demonstrated

Question 7

strength of correlation graph

Answer 7

• relatively economic unlike lab studies there is so need for a controlled environment and can use secondary data so less time consuming
• Useful starting point for research by accessing the strength and direction of a relationship correlation provides a measure of how two variables are related if variables are strong it may suggest hypothesis for future research.

Question 8

disadvantage of correlation graph

Answer 8

no cause and effect correlations are represented as casual by the media when they only show how two variables are related this leads to false conclusions about cause of behaviours

Intervening variables another untested variable may explain relationship between co-variables this mag lead to false conclusions