The formula of Mean: In statistics ... mean definition and formula for grouped and ungrouped data, properties of mean, solved examples and practice questions. Mean Definition: What is Mean?

Grouped frequency tables are a way of showing data ... mean cannot be calculated, so an estimate for the mean is calculated instead. Assume each length is in the middle of its group. For example ...

Inequalities are often used in grouped tables. For example ... the mean number of minutes late. In grouped tables the exact number of minutes late cannot be found. As the data has been grouped ...