Correlation

Question 1

Name the 7 forbidden words in correlation

Answer 1

• difference
• effect
• affect
• change
• IV
• DV
• experimental design

Question 2

Describe positive correlation

Answer 2

As one co-variable increases the other co-variable increases too

Question 3

Describe negative correlation

Answer 3

As one co-variable increases the other co-variable decreases

Question 4

What is no correlation

Answer 4

There is no definite trend between co-variables

Question 5

Limits of scatter graphs

Answer 5

• can’t justify that co-variable X has an effect on co-variable Y
• can draw findings (raw data) but not conclusions (inference from raw data)

Question 6

What is a research question

Answer 6

A broad question about concept being investigated

Question 7

What is a research aim

Answer 7

Identifying a more specific concept within the question

Question 8

What does research aim have an impact on

Answer 8

Research method

Question 9

Name two research methods

Answer 9

• correlations study
• experiment

Question 10

Correlation study example

Answer 10

• ‘relationship’
  ‘Whether energy levels are RELATED to hours slept’

Question 11

Experiment example

Answer 11

• ‘cause and effect’
• ‘EFFECTS of chocolate consumption on levels of happiness’

Question 12

What ethics are considered in correlation studies, explain

Answer 12

• Confidentiality (sensitive data can’t be traced back to where it came from)
• protection from harm (questions don’t cause participants harm)

Question 13

What is a two tailed hypothesis

Answer 13

No expectation is being conveyed as to the direction the relationship might go in

Question 14

How to write a two tailed hypothesis

Answer 14

‘There will be a significant correlation between…’

Question 15

What is a one tailed hypothesis

Answer 15

There is an expectation that the result will go in a particular direction

Question 16

How to write a one tailed hypothesis

Answer 16

‘There will be a significant positive/negative correlation between…’

Question 17

What is a null hypothesis

Answer 17

The correlation is no greater than what’s expected by chance

Question 18

How to write a null hypothesis

Answer 18

‘No significant correlation between…’
‘Any correlation due to chance factors’