Sampling Definitions
The specific group of people that you will collect data from.
What is a Sample?
Ms. Pilla wants to know the favourite sports of students in grades 6 and 7, but she only surveys her own 6/7 split class.
What is Convenience Sampling?
A sample that is selected based on who is the closest to them.
What is Convenience Sampling?
Nobody wants to volunteer for the class sweeper job this week!! Ms. Pilla picks from the popsicle sticks.
What is Simple Random Sampling?
Each person is randomly chosen and has an equal chance of being selected to participate in the study.
What is Simple Random Sampling?
The company has offices in 10 cities across the country (all with roughly the same number of employees in similar roles). You can’t travel to every office to collect your data, so you use random sampling to select 3 offices.
What is Cluster Sampling?
A population is divided into subgroups of people that have different characteristics, representative of the entire population. Those groups are then chosen at random.
What is Cluster Sampling?
Krisha organizes her 1000-person sample into alphabetical order. She then selects every 4th person from that sample to survey for her study.
What is Systematic Sampling?
A fixed sampling pattern at regular intervals (e.g., every 5th participant of a study).
What is Systematic Random Sampling?
Kaeser the researcher wants to determine the average marks of university students in Ontario, so he takes a sample of 4,000 students. Of those 4,000 students, Kaeser makes sure that a portion are studying Science, a portion are studying math, and so on. He puts them into groups based on what they are studying, then randomly selects people from each of those groups to be in his study.
What is Stratified Random Sampling?