Week 0 and 1: basics Flashcards
1
Q
What does SRS stand for?
A
Simple Random Sample
2
Q
Cluster samples
A
Pop. is divided into naturally occuring groups
3
Q
Multi-stage samples
A
Combination of sampling techniques
4
Q
What are the two types of data?
A
Categorical and quantitative
5
Q
Which two displays do you use to see frequency of values
A
Histograms and dot plots
6
Q
Why might you use a stratified data set?
A
If the population is already unequal
7
Q
What are the three main errors associated with responses
A
Non-response, response rate, and response bias
8
Q
When might you use measures of center?
A
When the mean is not representative
