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Statistics Probability Review

2. Vocabulary Statistics
Statistics Examples
Random Sample- a sample in which every element in the population has an equal chance of being selected. Population- the entire group considered for a survey Biased sample- does not represent the whole population Mean- the sum of the values divided by the number of values MAD(mean absolute deviation)- the average distance of each data point from the mean *Also know median, mode, and range
Calculate the Mean and Range
Analyze dot plots and box-and- whisker plots
Extra Study Resources: Statistic Quiz and Handouts

3. Probability Vocabulary
Probability: the likelihood of an event happening Outcome: one of the possible results of an experiment Certain: 1.0, 100%, probability of an event definitely happening Impossible: 0, probability of an event definitely NOT happening * Also remember likely, equally likely, and unlikely Experimental probability: the probability of an event based on the RESULTS Theoretical probability: what is expected to happen in an experiment Sample Space: the set of all possible outcomes for an experiment Compound probability: an event that consists of two or more sample events * Also remember dependent and independent events Tree diagram: a visual model that shows all possible outcomes

4. Probability Examples
Random sample vs biased sample Certain, impossible, likely, unlikely, equally as likely Experimental probability vs theoretical probability Using probability to make predictions Tree diagrams Extra Study Resources: IP: , Common Assessment, Study Guide

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