Home
Flashcards
Preview
ISDS 361B Ch. 5
The flashcards below were created by user
tv
on
FreezingBlue Flashcards
.
Home
Mobile
Quiz
How do you collect data.... where does data come from?
Observation
Experiment
Survey
What are 2 sampling plans?
Stratified Random Sampling
Cluster Sampling
Stratified Random Sampling
Divide and put population into categories and then take random samples from each.
Cluster Sampling
Random sample of groups or clusters
Sampling
take a sample to represent the population
What are the 2 errors that can arise when taking samples?
Sampling Error
Nonsampling Error
Sampling Error
Error we expect when making a statement of population based on sample
Ex: Difference between the true (unknown) value of the pop. mean and its estimate (sample mean) is sampling error
Nonsampling Error
Mistakes made from taking the wrong information
Ex: Recording incorrect responses.
Author
tv
ID
39498
Card Set
ISDS 361B Ch. 5
Description
Data Collection and Sampling
Updated
2010-10-04T03:46:53Z
Show Answers
n
Home
Flashcards
Preview