Normality: standard deviation applicability
Not what you're looking for?
Explain why normality is required for standard deviation applicability. Please give examples.
Purchase this Solution
Solution Summary
The standard deviation applicability normality is examined. Examples are provided.
Solution Preview
Normal is important because what we are statistically after is a mean that is statistically significant when we say that the average height of a US man is such and such and the average height of a US woman is this. We would be able to statistically validate that the largest percentage of heights is within set standard deviations from the average height. Our curve would be statistically significant and reliable in determining the height of men and women in the US.
If however our sample departed from the norm and we included an abnormally large sample of individuals who are 7' and taller or 4' and shorter our mean or average height would not be statistically significant in determining the true average height of men and women in the US. The mean would be either too tall or too short because of using an abnormal sample. Standard ...
Purchase this Solution
Free BrainMass Quizzes
Can you name these types of cognitive distortions?
In each mini-scenario, can you identify the type of cognitive distortion being displayed? All of us are subject to cognitive errors, biases, and distortions throughout our daily lives.
Erik Erikson's Psychosocial Stages
Erik Erikson researched eight stages of psychosocial development beginning at birth and ending at death. This quiz challenges your knowledge of each stage, the corresponding age range, and the conflicts present during each stage.
Psychology
This quiz provides a general overview of psychology basics.
Anxiety Disorders
This quiz is designed to help students gain a better understanding of various types of anxiety disorders.
Health Psychology
This quiz speaks to the general concepts, themes, and terminology associated with the field of health psychology.