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Efficient Computing Confidence Interval Measures
- Efficient computation in all cells in data cube
- Both mean and confidence interval are algebraic
- Why confidence interval measure is algebraic?
\[ \bar{x}\pm t_{c}\hat{\sigma}_{\bar{x}} \]
x' is algebraic
\[ \hat{\sigma}_{\bar{x}}=\frac{s}{\sqrt{l}} \]
where both s and l (count) are algebraic
- Thus one can calculate cells efficiently at more general cuboids without having to start at the base cuboid each time
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