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# EUS 7 Math

### EUS 7 Math: Probability & Statistics

complementary events two events are complements if the sum of their probabilities is 1, (the probability of something happening plus the probability of not happening is 1)
experimental probability the ratio of the number of favorable results to the total number trials in a probability experiment; is based on what does happen in the experiment
favorable outcome a 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 a scale is divided into on a graph
line plot a number line used to show frequency of data
mean the mathematical average of data; found by finding the sum of all 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 the greatest numbers in the set
simple event a probability event that consists of exactly one outcome
stem-and-leaf plot a display of numerical data in which each piece of data is separated into two numbers based on the 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 event
Created by: debra allred