central tendancy + standard deviation Flashcards
1
Q
primary data
A
collected first hand
2
Q
secondary data
A
information collected for a purpose other than the current one
3
Q
qualitative data
A
expresses quality of things (words or pictures) - can’t be counted
4
Q
quantative data
A
how much there is of something
5
Q
evaluation of qualatative
A
+ improves validity as we understand why soemthing has happened
- harder to analyse
6
Q
evaluation of quantative
A
+ easy to analyse
= objective
- less detaiked
7
Q
evaluation of mean
A
- takes into account all the data
- distorted by extreme scores
8
Q
evaluation of median
A
- ## doesnt take into account all scores
9
Q
evaluation of mode
A
- can be used with all types of data
- not distorted by extreme scores
- not representative
10
Q
evaluation of range
A
- easy to calculate
- affected by extreme variables
- doesnt give info on whether scores are spread around the mean
11
Q
evaluation of standard deviation
A
- more precise measure of spread of data as all values are taken into account
- doesnt show extreme scores
12
Q
standard deviation
A
measure of the spread of data around the mean
13
Q
A
