ZERO LEVEL BASIC CLASS - L9

Calculate average number of marks by student in a class. Note: It is inclusive class case with lower limit of the first class is zero.

Basics and Review OF Class Xth

Ecology is basically concerned with how many basic levels of organisation ?

Let l be the lower class limit of a class-interval in a frequency distribution and m be the mid-point of the class. Then, the upper class limit of the class is m+(l+m)/2 (b) l+(m+1)/2 (c) 2m-l (d) (m-2l)