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LISD 6th EUS 9
Probability and Statistics
Question | Answer |
---|---|
complementary events | two events are complements if the sum of their probabilities is 1. (The probability of something happening plus the probability of it NOT happening is 1.) |
experimental probability | the ratio of the number of favorable results to the total number of trials in a probability experiment; is based on what DOES happen in an 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 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 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" |
probability | ratio of favorable outcomes to total possible outcomes |
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 the set |
simple event | a probability event that consists of exactly one outcome |
statistics | "the study of this topic deals with collecting, organizing, and interpreting data" |
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 event |