WJEC A-Level Psychology 601-5719-7
Psychology Past to Present — The Five Approaches
Contemporary Debates
Principles of Research and Application of Research Methods
Mathematical Requirements for Psychology (Appendix A: AS Unit 2 and A2 Unit 4)
Addictive BehavioursAddictive
Autistic Spectrum BehavioursAutistic spectrum
Bullying BehavioursBullying
Criminal BehavioursCriminal
SchizophreniaSchizophrenia
StressStress
Controversies in Psychology
Applied Research Methods
Mathematical Requirements for Psychology (Appendix A: AS Unit 2 and A2 Unit 4)
Algebra
- 3 things to know
- AS Unit 2 and A2 Unit 4
Overview
Twenty recall questions on Algebra.
What you need to know
Answer each one before you reveal it.
In Spearman's formula, what does n stand for, and what happens to the coefficient as ∑d² gets larger?
A test returns p = 0.07 in a study using the 0.05 level. How is the relationship written in symbols, and is the result significant?
Questions from this subtopic
Each one with the model answer underneath.
- 1
What do the symbols ≤ and ≥ mean, and how is ≤ used when reporting the outcome of a statistical test?
Model answer
≤ means 'less than or equal to' and ≥ means 'greater than or equal to'. A significant outcome is reported as p ≤ 0.05, meaning the probability that the result is due to chance is 0.05 or less.
- 2
Write in symbols the statement that the probability of the results being due to chance is 1% or less.
Model answer
It is written p ≤ 0.01.
- 3
What does the symbol ∝ mean, and what is an example of its use with psychological data?
Model answer
It means 'is proportional to', for example writing that total study time ∝ number of trials completed when each trial takes the same length of time.
- 4
What does the symbol ≈ mean, and when is it used in reporting a result?
Model answer
It means 'is approximately equal to', and it is used for a rounded or estimated value, such as writing that a mean of 14.3667 is ≈ 14.4.
- 5
A Mann Whitney U test gives an observed value of 12 against a critical value of 20. How is the relationship between the two values written using the correct symbol?
Model answer
The relationship is 12 < 20, so the observed value is smaller than the critical value.
- 6
A test returns p = 0.07 in a study using the 0.05 level. How is the relationship written in symbols, and is the result significant?
Model answer
The relationship is p > 0.05, so the result is not significant and the null hypothesis is retained.
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