Populations
Definition
Populations refer to all possible individuals, objects, events, etc., that share some common characteristic under investigation. In statistics, populations encompass every member of interest for a particular study.
Analogy
Think of populations as different flavors of ice cream available at an ice cream shop. Each flavor represents a group of individuals, and together, they make up the entire population of potential choices. When studying ice cream preferences, you might focus on specific populations like chocolate lovers or fruit enthusiasts.
Related terms
Samples: These are subsets of a population that researchers select to represent the entire group for data collection and analysis.
Sampling Techniques: These are methods used to choose samples from a population in a way that ensures representation and minimizes bias.
Parameter: This is a numerical measure describing a characteristic or feature of an entire population.
"Populations" appears in:
Subjects (3)
Practice Questions (3)
How many populations are involved in chi-square tests of homogeneity?
If two independent samples come from populations with very small sample sizes, can we still use the two-sample z-interval?
If we are performing an experiment to compare the weights of two populations, what is essential regarding the randomization of the samples?
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