1. Systematic Sample Definition:
A sample selected by listing a population sequentially and choosing members at regular intervals.

2. Pros & Cons Pros Cons Spreads sample more evenly over population
Depending on the nature of the methodology used, the sample can exclude certain objects
Easier to conduct than simple random sample
May be prone to bias
Grid doesn’t necessarily have to be used, sampling just has to be at uniform levels
Possible Periodicity

4. Process Step 1: Determine the population size
Step 2: Determine the sample size
Step 3: Use “Interval Equation”
Step 4: Choose one sample out of the interval
found from Step 3
Interval= Population size
Sample size

5. Example
For example, if Tanner wants to sell cookies to 250 people in his neighbourhood containing 1000 residence. Suggest a method for using systematic sample.
Interval = Population size
Sample size
Interval =
250
Interval =
Therefore, Tanner must choose 1 sample out of every 4 people in the population, starting with 1 random person from 4 people.