Sampling
Each member of a population is equally likely to be chosen
Simple Random Sample
how much bias is Convience sampling
High Bias
The question that can be answered by collecting many pieces of information or data
+ NOT a one-answer question
Statistical question
Asks every member of a sample the same set of questions and records their questions
Sample Survey
What is you going to do
Get a 100%
When a population is divided into groups with similar characteristics and a sample is randomly chosen from each group
Stratified Sampling
how much bias is Cluster Sampling
Moderate Bias
Not numbers, Data fits into categories
Categorical variable
Involves applying a treatment to some group or groups and measuring the effects of the treatment
Experiment
What should I do more of?
Drink water and watch my diet
When a population is divided into convinient groups and an entire group is chosen at random times as the same
Cluster Sampling
how much bias is Simple Random Sample
No bias
Numerical data
Quantitative variable
Observe members of a sample and record results without applying any treatment
Observvational Study
Whos driving you home?
no idea
When you start with one member chosen random then use a rule to select the rest of the members
Systematic Sampling
how much bias is Stratified Sampling
Moderate Sampling
Set of all members of a group that you want to know something about
Population/Parameter
Center is what?
The median
hey
no
Only choosing subjects that are in close proximity or easy to get to
Convenience Sampling
how much bias is Systematic Sampling
Moderate Bias
A subset (part of group) of the population that is being studied
Sample/statistic
Spread is what?
IQR
I already wanna go home from school
ik girl