Questions and Answers
What is the formula for variance?
What is the main purpose of calculating variance?
What is the unit of standard deviation?
What does a small standard deviation indicate?
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What is the formula for standard deviation?
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What is the sixth step in calculating variance and standard deviation?
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What does a large standard deviation indicate?
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Why is variance always non-negative?
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What is the main purpose of calculating the variance of a data set?
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Which of the following statements about the variance is true?
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What is the relationship between the standard deviation and the variance of a data set?
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What is the purpose of calculating the standard deviation of a data set?
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Which of the following statements about the standard deviation is true?
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What is the correct sequence of steps to calculate the variance and standard deviation of a data set?
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What does a large standard deviation indicate about the data?
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What is the main difference between the variance and the standard deviation?
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Which of the following is a reason why the variance of a data set is not directly comparable with the mean or the data themselves?
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What does a small standard deviation indicate about the data points?
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What is the purpose of calculating the variance of a data set?
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Which of the following is a property of standard deviation?
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What is the result of dividing the sum of the squared deviations by the number of data points?
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What is the purpose of calculating the squared deviations?
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Which of the following is a step in calculating the variance and standard deviation?
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What is the relationship between the standard deviation and the variance of a data set?
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What is the main difference between the variance and standard deviation of a data set?
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What is the effect of squaring each deviation from the mean on the variance?
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What is the implication of having a large standard deviation on the interpretation of the data?
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What is the purpose of calculating the variance of a data set?
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What happens to the variance when the data points are multiplied by a constant?
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What is the relationship between the variance and standard deviation of a data set?
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What is the effect of having a small standard deviation on the interpretation of the data?
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Why is the variance of a data set always non-negative?
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