Statistics: Inferential & Descriptive (OCR A-Level Psychology): Flashcards
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Practise the cards
15 cards from this deck
Range of correlation coefficient (r)
Range of correlation coefficient (r)
-1 to +1
r = +1 represents
r = +1 represents
Positive correlation
r = -1 represents
r = -1 represents
Negative correlation
r closer to 0 means
r closer to 0 means
Weaker relationship
r closer to -1 or +1 means
r closer to -1 or +1 means
Stronger relationship
Inferential statistics purpose
Inferential statistics purpose
Test if results are statistically significant
3 factors choosing statistical test
3 factors choosing statistical test
- Difference or correlation 2. Experimental design 3. Level of measurement
Test: repeated measures + ordinal
Test: repeated measures + ordinal
Wilcoxon Test
Test: independent groups + ordinal
Test: independent groups + ordinal
Mann-Whitney U Test
Test: correlations + ordinal
Test: correlations + ordinal
Spearman Rho Test
Nominal data definition
Nominal data definition
Data in categories
Ordinal data key feature
Ordinal data key feature
Ordered but lacks equal intervals
Interval data key feature
Interval data key feature
Equal, precisely defined units
Data type needed for parametric tests
Data type needed for parametric tests
Interval data
Test: repeated measures + interval
Test: repeated measures + interval
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