november applied test

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17 Terms

1
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notation for X

X~N(μ, σ2)

2
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68-95-99.7 rule

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points of inflection

μ ± σ

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all data lies in approx…..

μ ± 5σ

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Z means

number of σ above mean

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quartile is approx….

μ ± 2/3σ

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standard normal distribution notation

Z~N(0, 12)

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Z formula in terms of X


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ϕ(a) =

P(Z<a)

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P(A|B) or A given that B/A within B =

P(A∩B)/P(B)

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if events are independent

P(A|B) = P(A)

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P(AUB) =

P(A) + P(B) - P(A∩B)

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P(A∩B) =

P(A)P(B|A)

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regression line

line of best fit

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extrapolation

making predictions outside of original data range (unreliable as trend may not continue)

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linear regression line equation

y=a+bx

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exponential line equation

y=abx