WHat is the sensus
the whole population
WHat is a sample
a selection of the population
WHat is random sampling
where each memeber of the population has an equal chance of being selected
The steps of simple random sampling are
assign a number to every member
use a rng to get a number
if a number is repeated select again
repeat until quota is filled
Steps of systematic sampling
Divid the population by the sample size to get the group size
Assign a number to each member of the group from 1 to group size
Select a random numer between 1 and group size
Select that person from each group
What are the 2 types of non random sampling
Quota
Opportunity sampling
WHat is quota sampling
an interviewer selects a sample that reflect the characteristics of the whole population
What is oportunity sampling
Sample is taken from people who are available at the time of study and who fits the criteria you are looking for