Research skills 1
- Created by: Amy
- Created on: 08-12-21 19:22
View mindmap
- Descriptive stats
- Goal is effective communication, use of tables & diagrams to help structure vast amounts of info for the reader
- Frequency tables, bar charts, frequency distribution, histogram, cumulative percentage frequency, boxplot, stem and leaf diagram
- Frequency distribution: central tendency- where scores tend to cluster
- 3 methods of measuring central tendency
- Mode: easy to work out, rarely used- can have more than one, lacks stability between samples, not sensitive to all scores in the distribution)
- Median: middle score/ average of middle scores in an even numbered distribution, all other scores are irrelevant
- Mean: average, sensitive to every score, in skewed distributions the extreme scores will produce a mean that is unrepresentative of the bulk of the scores, remains stable from sample to sample (random sampling variabiolity
- Scores furthest from mean contribute most to the variance- important for inferential properties
- Normal distribution: symmetrical about the mean, asymptotic 'tails', fixed %s of scores fall between points given by the standard deviation
- 3 methods of measuring central tendency
- Goal is effective communication, use of tables & diagrams to help structure vast amounts of info for the reader
Comments
No comments have yet been made