Want to help your sixth-grader master math? Here are some of the skills your sixth-grader will be learning in the classroom. In a herd of horses, the ratio of legs to tails is 4 to 1 (or 4:1) because ...

The interquartile range is another measure of spread, except that it has the added advantage of not being affected by large outlying values. In order to calculate this value we must first understand ...