WEEK TWO PRACTICE WORKSHEET
interest to certify that the sample size is substantial enough to accurately
signify the people involved with the survey. The random selection method for
choosing a sample that utilizes genuinely random methods, specifying that
individually, each and every single person in the populace has an equal
opportunity of being nominated in the outcome of the random sampling
(Films Media Group, 2005).
Why would that be your best method?
“The strategy in almost all psychology research is to study a sample of individuals who
are believed to be representative of the general population (or of some particular population of
interest). More realistically, researchers try to study people who do not differ from the general
population in any systematic way that should matter for that topic of research.” (Aron, Coups, &
Aron, 2013, Chapter 3: Some Key Ingredients for Inferential Statistics: Z Scores, the Normal
Curve, Sample versus Population, and Probability). By utilizing the random sampling method of
research, will be the most sufficient option because random samples eradicate the likelihood of
bias from the researcher which would have adverse outcomes on the study/experiment itself.
In a school band, 9 kids play string instruments, 10 kids play woodwind instruments, 7 kids
play brass instruments, and 4 kids play percussion instruments.
What is the probability that you randomly select a kid who plays a string or percussion