Sampling And Census Flashcards
(16 cards)
It is a relative thing that we have to establish. It is the main group of the study and might involve future participants.
Population
We use this to study the population
Parameters
It is what we can do to estimate parameters.
Statistics
It is a scientific way of studying samples
Statistics
If X is normally distributed then x(bar) is ____
Normally distributed
Mean of population is equal to the
Summation of all averages
This states that if you take large samples from a population, the sample means will be normally distributed.
Central Limit Theorem
As n > ___, the population becomes normally distributed.
30
This is the estimated proportion.
Sample Proportion
It is a type of sampling where after choosing a subject, you follow a system to choose the next subject. (Ex. Every 5th)
Systematic Sampling
It is a probability sampling where the population is grouped by strata by a certain common characteristic that can affect your study.
Stratified Sampling
In grouping by strata, there should be clear ________ set.
Boundaries
In this sampling, we group participants by strata again but there is no inherent characteristics that differentiates them. Their groups do not explain or connect to their answers.
Cluster Sampling
How can we use the cluster sampling?
- Choose 1st stage clusters then choose 2 stage clusters and then look for individuals under that cluster
It is the easiest way of gathering samples but may appear biased and unrepresentative.
Convenience Sampling
It is a sampling method where you have to complete or achieve a certain number but may also have an issue regarding how representative they are.
Quota Sampling
