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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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