Descriptive Statistics Flashcards
1
Q
what are the two types of descriptive statistics
A
- measures of central tendency
- measures of dispersion
2
Q
what are the measures of central tendency
A
- mean
- mode
- median
3
Q
what are the measures of dispersion
A
- range
- Standard deviation
4
Q
Mode = what is it / EVAL
A
- most frequent
+ not distorted by outliers
+ avoids 0.111 etc. - not always an exact average mode
- not inclusive of all data
5
Q
median = what it is / EVAL
A
- value in the middle when in order
+ not affected by outliers
+ easy - not inclusive
- difficult when set of data is even - no middle
6
Q
mean = what it is / EVAL
A
- average
+ all data used - easily distorted by outliers
7
Q
range = what it is / EVAL
A
- highest - lowest
+ easy - extreme scores distort
- scores could be clustered around mean
8
Q
standard deviation = what it is / EVAL
A
- calculation using all data lower SD = more clustered data
+ inc all data / shows range - outliers distort
- SD difficult to calc
