Understanding Statistical Questions and Data

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What is a statistical question?

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A statistical question is one that anticipates variability in the data and can be answered by collecting data. For example, 'How many hours do students in our school spend on homework each week?' is a statistical question.

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What is a population in statistics?

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The entire group being studied in a statistical analysis.

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What is qualitative data?

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Qualitative data describes qualities or characteristics and is often non-numerical. An example is 'the favorite color of each student'.

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What is quantitative data?

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Quantitative data can be counted or measured and is numerical. An example is 'the number of pets each student has'.

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What is the difference between qualitative and quantitative data?

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

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What is a sample in statistics?

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A sample is a small group selected from a larger population for the purpose of analysis.

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What is the mean in statistics?

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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.

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What is the median in statistics?

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The median is the middle value in a data set when the numbers are arranged in order.

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What is the mode in statistics?

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The mode is the value that appears most frequently in a data set.

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What is a survey in statistics?

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A survey is a method of collecting data by asking people questions.