Often referred to as Web analytics specialists, these marketing professionals review all the available data on a product, service, region or demographic and then make recommendations on how to market a particular product or service to a certain sector of consumers.
Scatter plots are used in descriptive statistics to show the observed relationships between different variables. Statistics is the study of the collection, analysis, interpretation, presentation, and organization of data. In applying statistics to, e.g., a scientific, industrial, or social problem, it is conventional to begin with a statistical population or a statistical model process to be studied.
Variance is a statistical measure that tells us how measured data vary from the average value of the set of data. In other words, variance is the mean of the squares of the deviations from the arithmetic mean of a data set. 1  Variance is the square of the standard deviation.  The formula for variance is.