Statistics is the science of collecting and analyzing numerical data gathered from a representative sample in order to infer the true mean or proportion of a population. The x-bar_ is the symbol (or expression) used for the sample mean statistics.
Base salary is a fixed amount of money paid to an employee by an employer in return for work performed. Base salary does not include benefits, bonuses or any other potential compensation from an employer.
What's Changed in a Year. The average base salary in the November 2012 survey is $94,381, not including bonuses and additional compensation. That's a bit higher than the average salary ($92,754) reported in November 2011.