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Measures of Central Tendency

Measures of Central Tendency. PS.1.AC.4: Apply probability to real-world situations such as weather prediction, game theory, fair division, insurance tables, and election theory. Students will be able to determine mean, median, and mode. Measures of Center.

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Measures of Central Tendency

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  1. Measures of Central Tendency PS.1.AC.4: Apply probability to real-world situations such as weather prediction, game theory, fair division, insurance tables, and election theory. Students will be able to determine mean, median, and mode. Chapter 1

  2. Measures of Center • The meanis the average of the data. Just add them together and divide by the number of data. • The median is the number in the center when the data is arranged in numerical order. If two numbers are in the center, the median is the average of those two numbers. • The mode is the number (or numbers) that occurs most often. You can have no mode (meaning no number repeats) or you can have more than one mode. Chapter 1

  3. Example (Measures of Center) The math SAT scores for 8 FHS students are listed below: 539 541 576 505 548 576 565 558 • Find the mean of the data. • Find the median of the data. • Find the mode of the data. • Which measure of center is the best indicator for the typical SAT math score for these students? Chapter 1

  4. Example (cont.) 551 539 541 576 505 548 576 565 558 • The mean is • The median is • The mode is • The best indicator of the typical SAT math score is the median, because this measure does not take into account the score of 505 which is significantly separate from the other scores. 553 576 Chapter 1

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