The Mean, Variance, and Standard Deviation
The primary numbers used to describe a distribution of scores when not using a picture.
The mean is an average score known as a measure of central tendency. The mean is used to represent a whole set
There are 2 branches of statistics Descriptive to summarize data Inferential to draw conclusions and make inferences about situations or people other than those on which the data are based.
Variable a condition
Assume that the reams of paper from a particular manufacturer have a mean of 500 sheets with a standard deviation of 12 sheets What percent of packages have more than 520 sheets? What percent of packages have less than 515 sheets? What percent of pac