Statistical Testing (AQA A-Level Psychology): Flashcards
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Practise the cards
10 cards from this deck
Purpose of statistical testing in psychology
Purpose of statistical testing in psychology
Determines if findings are genuine effects or occurred by chance
What the sign test examines
What the sign test examines
Differences in scores when same participants tested twice
Psychology's accepted significance level
Psychology's accepted significance level
0.05 (5%)
Definition of critical value
Definition of critical value
Threshold that must be reached for statistical significance
Three requirements for using the sign test
Three requirements for using the sign test
- Looking for differences 2. Repeated measures 3. Nominal data
Calculated value S in sign test
Calculated value S in sign test
The smaller of the two totals (positive or negative signs)
When sign test results are significant
When sign test results are significant
When S is equal to or less than the critical value
What nominal data means
What nominal data means
Data organised into categories
Information needed to find critical value for sign test
Information needed to find critical value for sign test
- Significance level 2. N value 3. One-tailed or two-tailed
What a significant difference means
What a significant difference means
Results unlikely to have occurred purely by chance