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New Terms Unit 3

New terms introduced in Unit 3

TermDefinition
Binomial Distribution The distribution of a discrete random variable with only two possible outcomes called “success” and “failure”; example is the distribution of gender among students
Measures of Center A summary statistic that describes where the center of data is located. Includes Mean, Median, and Mode.
Discrete Probability Distribution The distribution of discrete random variables.
Distribution An arrangement of values of a variable that could be expected or have been observed.
Probability Probability expresses the chance or likelihood of an event occurring. It is used to try to predict outcomes.
Probability Distribution Function A mathematical description of a discrete random variable, given either in the form of an equation (formula) or in the form of a table listing all the possible outcomes of an experiment and the probability associated with each outcome.
Measures of Dispersion A summary statistic that describes the spread of data. Includes Range, Variance, and Standard Deviation
Variance A measure of how spread out the data for a single variable are. It can tell you whether most of the values are centered around the mean.
Standard Deviation Like the variance this is a measure of the spread of the data. The lower the SD the more the data are clustered around the mean.
Mode The value that appears most frequently in the data. Distributions can have no modes, 1 mode, or more than 1 mode.
Mean Also known as an average. This is calculated by adding all the values and then dividing the total by the number of values that were added together.
Created by: Dr.D
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