Statistics Flashcards
1
Q
Quota sampling
A
Non random
Categorised into different individual members
2
Q
Stratified sampling
A
If quota sampling was random
Reduces sample error
Sample that represents the population
3
Q
Systematic sampling
A
- non random
Asking every nth person
4
Q
Snowball sampling
A
Rare subjects
Relies on referrals from previous subjects
5
Q
Observations in the distribution will be within 1,2 and 3 standard deviations
A
68.26%
95.5%
99.75%
6
Q
Sample standard deviation greater
A
To detect extreme values
7
Q
Positively skewed freq
A
Mode<median<mean
8
Q
Negativity skewed
A
Mean<median<mode
