Data and Statistics

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What is data?

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Data refers to facts, figures, and information collected for analysis.

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What is a statistic?

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A statistic is a numerical value that summarizes or describes a characteristic of a dataset.

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What is the difference between categorical and numerical data?

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Categorical data represents categories or groups, while numerical data represents measurable quantities.

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What is mean in statistics?

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Mean is the average of a set of numbers, calculated by adding them together and dividing by the count.

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What is median in statistics?

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Median is the middle value in a dataset when the numbers are arranged in order.

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What is mode in statistics?

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Mode is the value that appears most frequently in a dataset.

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What is relative frequency?

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Relative frequency is the ratio of the number of times an event occurs to the total number of trials or observations.

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How do you calculate the mean?

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To calculate the mean, add all the values together and divide by the number of values.

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How do you find the median?

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To find the median, arrange the data in order and identify the middle value.

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What is a frequency table?

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A frequency table is a way to organize data to show how often each value occurs.