correlations

Question 1

define correlations

Answer 1

A mathematical technique used to investigate the relationship or association between two variables, called co-variables.

Question 2

how do we display a correlation

Answer 2

scatter diagram

Question 3

name the 3 types of correlations

Answer 3

positive, negative, zero

Question 4

define positive correlations

Answer 4

When one variable increases as the other​
increases The dots are arranged from bottom left to top right ​

Question 5

define negative correlation

Answer 5

this is when one variable increases the other decreases​
The dots will be arranged from top left to bottom right ​

Question 6

define zero correlations

Answer 6

This is when there is no relationship between the variables​
The dots show no clear pattern ​

Question 7

strengths of correlations

Answer 7

Help to identify patterns in variables ​
It’s a good starting point that allows other research to be conducted by tweaking variables​
Allows us to explore complex relationships ​

Question 8

weaknesses of correlations

Answer 8

tells us there is a relationship but it doesn’t tell us HOW the variables are related​
So doesn’t give us the reasons why ​
Also intervening variables may be overlooked, so we might be able to say that one variable effects the other but we may overlook variables that may influence it.

Question 9

define scatter diagram

Answer 9

A type of graph that represents the Strength and direction or a relationship between co-variables in a correlation.