9 lines
409 B
Markdown
9 lines
409 B
Markdown
## z tests for percentages
|
|
This test can be used if:
|
|
- The data is a simple random sample from the population of interest
|
|
- The sample size is large
|
|
- A qualitative variable of interest summarized by percentages
|
|
- Can use a box with tickets of 1s and zeros to represent the population
|
|
If an observed value is too many SEs away from the expected value, it is hard to explain by chance.
|
|
## c tests for averages
|