# Family 390

The flashcards below were created by user syra222 on FreezingBlue Flashcards.

1. Why Sample?
• Improve data quality, obtain in-depth information about each subject. Want to minimize the number of things we examine or maximize the quality of our examination of those things we do examine.
• Generalize the population to make better changes to society
2. When is sampling unecessary?
• When the number of things we want to sample is small
• Data is easily accessible
• Data is unaffected by what we look at
3. What is an example of Sampling Frame?
An example of a sampling frame is a list of High School students
4. What is an example of elements/sample units in a sample?
The High School students name
5. What is an example of unit of analysis?
Once I have chosen a High School students name and am going to survey that student it becomes the unit of analysis.
6. What does Probability mean?
• Every element of a population has a chance of being included.
• Also random sampling
• Less likely to be biased
7. What does Nonprobability mean?
• Not every member of the population has a chance of being studied
• Purposeful
• Selected group
8. What are 3 types of Sampling Errors?
• Coverage
• Nonresponse
• Sampling
9. What does coverage error mean?
• The people that are left out
• When results are different between the sampling frame and the target population
• Example: not everyone has a phone, those without will be excluded from the sample but not on purpose.
10. What is a Nonresponce error?
• When people do not answer the survey
• No data can be collected from the individual
11. What is Sample Error?
• Difference between the characteristics of a sample and the charactertics of the population from which the sample is drawn
• Sampling Variability: Variability in sample stat occurs when different samples are drawn from the same population
12. What are the types of Probability Sampling?
• Simple Random
• Systematic
• Stratified
• Cluster
• Multistage/Multicluster
13. What is Simple Random Sampling?
• Write names on a paper and draw from hat
• Use the number chart to pick people by the number
14. What is Sampling Distribution?
• The distribution of a sample statistic
• Distribution of any statistic tends to be around the population parameter, especially as the sample gets bigger (the more accurate)
 Author: syra222 ID: 103725 Card Set: Family 390 Updated: 2011-09-23 01:52:30 Tags: Family Science 390 Exam Folders: Description: Exam 1 (1-5) Show Answers: