Data & Sampling Practice

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What is a biased sample?

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A biased sample is a group that does not accurately represent the population being studied, leading to skewed results.

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What is an unbiased sample?

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An unbiased sample is a group that accurately represents the population being studied, allowing for valid conclusions.

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Why is it important to have an unbiased sample in surveys?

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An unbiased sample ensures that the results of the survey are valid and can be generalized to the entire population.

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What is sampling in statistics?

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Sampling is the process of selecting a subset of individuals from a population to estimate characteristics of the whole population.

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What is a population in statistics?

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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 a sample in statistics?

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A sample is a subset of the population that is used to represent the entire group.

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What does it mean to survey a population?

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To survey a population means to collect data from individuals in that population to gather insights or opinions.

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What is a random sample?

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A random sample is a sample that is selected from the population in such a way that every individual has an equal chance of being chosen.

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What is a convenience sample?

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A convenience sample is a type of non-random sampling where the sample is taken from a group that is easily accessible.

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What is the difference between qualitative and quantitative data?

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Qualitative data describes characteristics or qualities, while quantitative data involves numerical measurements.