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2 pt 3 pt 4 pt 5pt 1 pt 2 pt 3 pt 4 pt 5 pt 1 pt 2pt 3 pt 4pt 5 pt 1pt 2pt 3 pt 4 pt 5 pt 1 pt 2 pt 3 pt 4pt 5 pt 1pt Statistics Terms Statistics Formulas CountingProbabilityGraphs

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The same as the average.

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Mean

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The middle term in a set of data.

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Median

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The term that means the most.

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Mode

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The median of the upper half.

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Upper Quartile or Q3

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Extreme numbers compared to the rest of the data.

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Outliers

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The Range

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Highest - Lowest

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The Mean

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Add all numbers and divide by the total number of items.

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The Median

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Put numbers in order from least to greatest and take the number in the middle.

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Interquartile Range

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Q3 - Q1

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Outliers

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1.5 x interquartile range. Subtract from Q1 and add to Q3.

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Formula for finding the total number of possibilities, or the Fundamental Counting Principle.

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The number of ways the first event can happen times the number of ways the second event can happen, etc.

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If you have 5 shirts, 4 pants, and 2 belts this is the total number of outfits you can make.

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40

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When order matters.

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Permutation

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8 *7*6*5*4*3*2*1 could be rewritten as...

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8!

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The number of ways 17 horses could finish 1st, 2nd, and 3rd in the Kentucky Derby.

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4080

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The probability of an event is defined as...

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The total number of favorable outcomes divided by (over) the total number of possible outcomes.

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The probability of rolling a 3 OR a 4 on one roll of a die.

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1/3

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When the outcome of one event does not affect the outcome of another event, the events are said to be...

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Independent

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The probability of tossing a coin and getting a tail AND of rolling a die and getting a 2.

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1/12

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If a bag contains 5 red, 3 blue, and 7 yellow marbles, the probability of of randomly selecting a 2 red marbles if the first one is NOT replaced is...

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2/21

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The odds in favor of an event occurring is defined as...

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The ratio of the number of favorable outcomes to the number of unfavorable outcomes.

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The odds of flipping a coin and getting a head is...

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1:1

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The odds against an event occurring is defined as...

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The ratio of the number of unfavorable outcomes to the number of favorable outcomes.

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The odds AGAINST rolling a die and getting a 5 is...

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5:1

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The odds AGAINST rolling two dice and getting a sum of 7 is...

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1:5

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