Examlex
Describe the major methods for measuring public opinion.What are the advantages and disadvantages of each method? How valid are criticisms of opinion polling?
Variance
A measure of the dispersion of a set of values, calculated as the average of the squared differences from the mean.
Standard Deviation
Standard deviation is a statistical measure of the dispersion or variability of a set of data points around their mean, indicating how spread out the data points are.
Mean
A measure of central tendency that is calculated by dividing the summation of all values in a data set by the number of values.
Laws Of Variance
Principles that describe how variance behaves in different statistical distributions and under various transformations.
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