Flashcards
statistics
Cards in this deck (20)
- 1what is nominal measure?reflects qualitative difference, could be swapped for letters
- 2what is ordinal measure?reflects ranking order
- 3what is interval measure?reflects ranking order and has equal scale point differences, e.g. temperature
- 4what is ratio measure?reflects ranking order and has a true zero point, e.g. exam results
- 5what is a histogram?a frequency distribution graph
- 6how is a normally distributed histogram shaped?like a bell
- 7how is a histogram with positive skew shaped?
- 8how is a histogram with negative skew shaped?
- 9what are acceptable values of skew?between -1 and +1
- 10how is leptokurtosis shaped?
- 11how is mesokurtosis shaped?
- 12how is platykurtosis shaped?
- 13what is the mean?the sum of all the data divided by the number
- 14what is the median?the middle score
- 15what is the mode?the most occurring score
- 16when can the median be useful?when the mean has been effected by extreme scores/outliers
- 17what kind of distribution will you have if all measures of central tendency are equal?normal distribution
- 18why is it important to look at the graph before calculating central tendency?in case there is two peaks
- 19if two peaks are far apart what does this mean?there is a genuine difference between the groups
- 20what does it mean if distribution tails overlap?it is less likely that the difference between the groups is genuine
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- Psychology Methods and Applications Year 1 Semester 2 Flashcards on statistics, created by Elle Milne on 09/04/2018.
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- Elle Milne
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