Understanding sampling methods, distributions, and statistical inference
What is systematic sampling?
A method where items are selected at regular intervals from an ordered list after a random starting point.
Example: Select every 10th customer from a list; if random start is 3, select 3rd, 13th, 23rd, etc.
Note: Easy to implement; can be biased if data has periodic patterns that align with sampling interval; approximates SRS if list is randomly ordered
