• Understanding issues arise when
defining variables
• How to define variable
• How to collect data
• Identify different ways to collect a
sample
• Understand types of survey error
, Populations vs samples
Population consists of all
Sample is a portion of
the items or individuals
population selected fo
about which you want to
analysis. When you analy
reach conclusion. When
data from sample you
you analyze population you
compute statistics.
compute parameters.
, Collecting Data Via Sampling Is Used
When Selecting A Sample Is
Less time consuming than selecting Less costly than selecting every item Less cumbersome and more practi
every item in the population. in the population. than analyzing the entire populatio
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through EFT, credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying this summary from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Scienceratutors. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy this summary for R150,00. You're not tied to anything after your purchase.