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# EUS 7

### Probability and Statistics

Complementary Events Two Events are complements if the sum of their probabilities is 1.
Experimental Probability The ratio of the number of a favorable result to the total number of trials in a probability experiment.
Favorable outcome The desirable outcome
Frequency Table A table that lists items and uses tally marks to collect data and show the number of times they occur
Interval The equal parts of a scale is divided into, on a graph.
Line Plot A number line used to show frequency of data
Mean The mathematical average of the data; found by finding the sum of all of the data and dividing by the number of data pieces
Measure of Central Tendency Numbers or pieces of data that can represent or summarize a whole set of data, such as mean, median, and mode.
Sample Space The set of all possible outcomes of a probability event
Scale The set of numbers used to label an axis when graphing; must include the least and greatest numbers in a set.
Simple Event A probability even that consists of exactly one outcome.
Stem-and-leaf plot A display of numerical data in which each piece of the data is separated into two numbers based on place value and placed in columns of a T-chart.
Theoretical Probability The ratio of the number of favorable outcomes to the total number of possible outcomes;is based on what should happen under perfect circumstances.
Tree Diagram A visual representation that shows all possible outcomes in a probability even.
Created by: Christina_lane