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Probability
Probability Definition: The extent to which an event is likely to occur, measured by the ratio of the favorable cases to the whole number of cases possible. HOW TO: the probability of flipping a coin and it being heads is ½, because there is 1 way of getting a head and the total number of possible outcomes is 2 (a head or tail). Khan Link: https://www.khanacademy.org/tag/basic-probability
Sequence And Series
Sequences and Series Definition: A sequence is an ordered list of numbers and the sum of the terms of a sequence is a series. In an arithmetic sequence, each term is equal to the previous term, plus (or minus) a constant. The constant is called the common difference (d). HOW TO: The formula for finding any term of an arithmetic sequence is where (a) is the first term of the sequence, d is the common difference, and n is the number of the term to find. To find the sum of a certain number of terms of an arithmetic sequence use where Snis the sum of n terms, (a) is the first term, and (a)n is the nth term. An arithmetic sequence graphs as points along a line. Khan Link: https://www.khanacademy.org/math/algebra2/sequences-and-series/alg2-geometric-sequence-series/v/series-as-sum-of-sequence https://www.khanacademy.org/math/algebra/sequences/introduction-to-arithmetic-squences/v/arithmetic-sequences https://www.khanacademy.org/math/algebra2/sequences-and-series/alg2-seq-and-series/v/formula-for-arithmetic-series