Standard Deviation - Basic

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What is Standard Deviation?

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Standard Deviation is a measure of the amount of variation or dispersion in a set of values.

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What does a low Standard Deviation indicate?

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A low Standard Deviation indicates that the values tend to be close to the mean of the set.

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What does a high Standard Deviation indicate?

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A high Standard Deviation indicates that the values are spread out over a wider range.

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How is Standard Deviation calculated?

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Standard Deviation is calculated by taking the square root of the variance.

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What is the mean?

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

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What is the median?

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The median is the middle number in a data set when arranged in order from least to greatest.

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What is the mode?

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The mode is the number that occurs most frequently in a data set.

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What is the range of a data set?

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The range is the difference between the maximum and minimum values in a data set.

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What is a normal distribution?

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A normal distribution is a probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence.

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What is a Bell Curve?

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A Bell Curve is the graph of a normal distribution, shaped like a bell.