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| Explain briefly why statistical models are used when attempting to solve real-world problems |
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-Allow problems to be solved without the need to construct a full size physical model
- Saves time and expense
-Allow parameters to be changed and refinements to be made quickly |
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| A and B are independent if... |
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Definition
P(A|B)=P(A)
P(ANB) = P(A) x P(B) |
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| A and B are mutually exclusive if... |
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| P(AUB) = P(A) + P(B) - (PANB) |
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| Standard Deviation equation = |
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| Sxy/ square root of Sxx x Sxy |
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| lcb + cw[(median value - cf of previous group)/freq of median group] |
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