Sampling Flashcards
What is the objective of the session?
Understanding sampling methodology, preventing sampling error, practicing and applying sampling methodology
What is the difference between Sample and Population?
Sample is a subset of the population; Population includes all items of interest
What are the two types of statistical analysis?
- Descriptive Analysis
- Inferential Analysis
What is a Sampling Frame?
Accessible Population from which a sample is drawn
What is Sampling?
A subset of the population picked randomly; any item has an equal chance of selection
What is Coverage Error?
Certain groups are wrongly included within the sampling frame
What is Nonresponse Error?
Not everyone is willing to respond; not enough respondents
What is Sampling Error?
Risk that the sample might not be representative of the population
What is Measurement Error?
Errors may arise from misunderstood questions or poor experimental design
What are the types of Sampling Methods?
- Simple Random Sampling
- Systematic Sampling
- Stratified Sampling
- Cluster Sampling
How is Simple Random Sampling conducted?
Randomly selecting items such that each has an equal chance
Describe Systematic Sampling.
Sampling every nth person from a list
What is Stratified Sampling?
Dividing the population into strata and sampling from each stratum
What is Cluster Sampling?
Dividing the population into clusters and randomly selecting entire clusters
True or False: Sampling Bias occurs when certain groups are excluded from the sample.
True
Fill in the blank: The risk that your sample might not be representative of your population is known as _______.
Sampling Error
What is Exploratory Data Analysis?
Analyzing data sets to summarize their main characteristics
What does Probability refer to in statistics?
The measure of the likelihood that an event will occur
What is the purpose of Inference in statistics?
To make conclusions about a population based on sample data
