Chapter 4 · Sampling · Slide 130/274

Simple and Systematic Random Sampling

Requires knowledge of the population

4.2 · Probability Sampling Requires knowledge of the population

Simple Random Sampling

Each element is selected independently of all others. This means:
Each element of the population has a known and equal probability of being selected.
Every possible sample of size n has a known probability of actually being drawn.

Select at random

AbolinaTirza

BernhardtCarina

BerzHelena

BoeckNicola

DollaseMiriam

FränzelCarolin

FrostAnnika

GoetzeAnika

JähelFelix

JankNadja

KeitzlInga

KroppJanine

KubitzkyVictoria

LangenEduard

Systematic Random Sampling

First, a starting element is selected at random; then every i-th element is drawn from the sampling frame.
The interval i results from the size of the population N relative to the size of the sample n: i = N / n

Start here, then every i-th

AbolinaTirza

iBernhardtCarina

BerzHelena

BoeckNicola

iDollaseMiriam

FränzelCarolin

FrostAnnika

iGoetzeAnika

GrothCarolin

JähelFelix

iJankNadja

KeitzlInga

KroppJanine

KubitzkyVictoria

QUESTIONSTAR · Dr. Paul Marx 130 / 274