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# Probability and Data

### This is for our unit on probability and data analysis

Possible results of a probability event. Outcomes
One outcome or a collection of outcomes. Simple Event
The ratio of the number of favorable outcomes to the number of possible outcomes. Probability
The set of all possible outcomes. Sample Space
What should occur in a probability experiment. Theoretical Probability
What actually occurs in a probability experiment. Experimental Probability
A diagram used to show the total number of possible outcomes. Tree Diagram
If two independent events occur in succession, their individual total number of outcomes can be multiplied to give their combined total number of outcomes. Fundamental Counting Principle
An arrangement or listing in which order is important. Permutation
The expression n factorial (n!) is the product of all counting numbers beginning with n and counting backwards to 1. Factorial
An arrangement or listing in which order is not important. Combination
The sum of the data divided by the number of items in the data set, also called the average. Mean
In a set of data, the middle number of the ordered data, or the mean of the two middle numbers. Median
The number or numbers that occur most often in a set of data. Mode
The smallest value in a set of data. Minimum
The largest value in a set of data. Maximum
The difference between the minimum and maximum in a set of data. Range
A diagram that divides a set of data into four parts using the median and quartiles. A box is drawn around the quartile values and whiskers extend from the quartiles to the minimum and maximum data points. Box and Whisker Plot
The median of the lower half of a set of data. Lower Quartile
The median of the upper half of a set of data. Upper Quartile
Data that are more than 1.5 times the interquartile range from the quartiles. Outliers
Indicates the number of values in each interval in a histogram. Frequency
Uses bars to display numerical data that have been organized into equal intervals. Histogram
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