When class widths are not equally sized, they are called unequal class intervals. The area of the bar represents the frequency, so to find the height of the bar, divide frequency by the class width.

This is a preview. Log in through your library . Abstract The dependence of lichen size on factors other than time often poses a major difficulty for lichenometry. In this study the influence of ...

RECENT measurements of the reflection coefficient of the ionosphere, for radio waves between 60 m. and 100 m., have led to a method of determining the collision frequency of electrons and molecules in ...