If the probability distribution of X is: 
What is the variance of X?
Definitions:
Teaching Methods
Various strategies, techniques, and approaches employed by teachers to facilitate student learning and understanding.
Ability Level
A measure of a person's competency or skill set in a particular area.
Randomized Block Design
An experimental design in which subjects are divided into blocks or groups that are similar and then randomly assigned to different treatments.
Analysis Of Variance
Analysis of Variance (ANOVA) is a statistical method used to compare the means of three or more samples to discern if at least one of the means is significantly different from the others.
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