Statistics - Populations vs. Samples

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What is the difference between a population and a sample?

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A population includes all members of a specified group, while a sample is a subset of the population used to represent the whole.

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What is Objective Data?

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Objective data is information that is measurable and observable, not influenced by personal feelings or opinions.

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What is Subjective Data?

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Subjective data is information that is based on personal opinions, interpretations, feelings, or beliefs.

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What is Categorical Data?

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Categorical data (qualitative data) fits into one of several different groups or categories.

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What is Numerical Data?

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Numerical data can be placed on a numerical scale or can be compared, such as height, weight, or age.

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What are Descriptive Statistics?

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Descriptive statistics summarize and describe the characteristics of a data set, including measures like mean, median, and mode.

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What are Inferential Statistics?

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Inferential statistics use a random sample of data taken from a population to make inferences or generalizations about the population.

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What is a Sample?

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A sample is a smaller group selected from a larger population, used to make inferences about the whole population.

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What is a Population?

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A population is the entire group of individuals or instances about whom we hope to learn.

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What is the Mean?

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The mean is the average of a set of numbers, calculated by adding all the values and dividing by the number of values.