Stats

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Question English Answer English
What's the purpose of X -Scale
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X-Scale controls the width of each histogram.
What happens when X-Scale is too big or small?
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You will not see the pattern of the table.
What do you think of when you hear UNUSUAL?
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X Bar + or - 2 × S
Unusual Calculation
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Mean = n×p Standard deviation = _/n×p×q. 1-P=q
What is at least 4?
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4,5,6
what is third quartile?
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75%
Use Normal Pdf
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when you are giving the boundaries or need to find area
Use InvNorm
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When you are given Area need to find Z score or Cut off Point or 90% problem
Airline Ticket
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1-binomCDF (n, 1-P,x)
At least with Binom
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1-binomCDF(n, prob,x) (go down by 1 on X)

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