as stats Flashcards
1
Q
what is a population?
A
A complete collection of relevant individual people or items.
2
Q
what is a simple random sample?
A
when every sample has on equal chance of being selected
3
Q
what is systematic sampling?
A
the required elements are chosen at regular intervals from an ordered list
4
Q
what is stratified sampling?
A
the population is divided into mutually exclusive data and a random sample is taken from both groups
5
Q
you can model X with a binomial distribution, B(n,p) if:
A
- there are a fixed number of trials
- there are always two possible outcomes
- there is a fixed probability of success
- the trials are independent of each other
6
Q
y=ax^n
A
log(y)=log(a)+nlog(x)
7
Q
y=kb^x
A
log(y)=log(k)+xlog(b)
