Probability
Statistical Terminology
Important Concepts
100
P(A’)= 1- P (A)
What is the Probability of an Event NOT Occurring (also the subtraction rule)?
100
The total of all numbers divided by the total number of items.
What is the Mean?
100
Design where variables are manipulated to impact outcomes.
What is an Experimental Design?
200
p (A and B) = p (A) * p (B)
What is the probability that event A AND event B will occur?
200
The difference between the highest and lowest scores in a data set
What is the Range?
200
Type of experimental design with THE SAME subjects in each condition.
What is Within-Subjects?
300
The type of event where the occurrence of one event will INFLUENCE the probability of the occurrence of another event.
What is a Dependent Event?
300
Measure of distance each score is from the mean.
What is the Standard Deviation?
300
The extent to which inferences that are made about individuals on the basis of test scores are accurate, meaningful, and appropriate.
What is Validity?
400
The following are examples of this type of event: (1) The probability of drawing a red marble from a bag of 10 marbles, replacing it, then drawing a blue marble from the bag. (2) The probability of the Yankees winning the world series and the probability of the Giants winning the Superbowl.
What is an Independent Event?
400
The amount of dispersion of a set of scores.
What is the Variance?
400
Type of evidence showing that a scale is a good representation of the variable or domain being measured.
What is Content Validity?
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