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Describing Data: Numerical Measures

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When you have completed this chapter, you will be able to:
LO1 Explain the concept of central tendency.

Identify and compute the arithmetic mean.

LO3 Compute and interpret the weighted mean.
LO4 Determine the median.
LO5 Identify the mode.
LO6 Calculate the geometric mean.
LO7 Explain and apply measures of dispersion.
LO8 Compute and explain the variance and the standard deviation.
LO9 Explain Chebyshev's Theorem and the Empirical Rule.

Compute the mean and standard deviation of grouped data.

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