BIOLOGY 173 Lecture Notes - Lecture 9: Normal Distribution, Standard Deviation
Document Summary
Introduction to statistics: how to describe a group based on a specific measure (e. g. , height or weight, mean- the average; add all values and divide by the number of individuals. X m = n: distribution around the mean i . Variance- for every value, find the difference between it and the mean & square it. Divide the sum of the squares by sample size minus one. s 2 = ( x m x i )2 n 1. Standard deviation- the square root of variance.
