MATH 123 Chapter Notes - Chapter 9: Standard Deviation, Central Tendency, Binomial Distribution
DepartmentMathematics and Statistics
Course CodeMATH 123
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MATH 123 – Linear Algebra and Probability
Chapter 9: Statistics
Frequency Distributions; Measures of Central Tendency
Measures of central tendency:
The mean of 𝑛 numbers can be given by:
The mean of a grouped distribution can be given by:
Measures of Variation
We can determine how much the numbers in a sample vary from the mean of a distribution by
calculating the variance and standard deviation.
The variance of a sample of 𝑛 numbers can be given by:
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