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<head><title>hypergeometric6</title>
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<body>
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<mrow>
<mtable>
<mtr>
<mtd>
<mtext>mean</mtext>
<mspace width="1em"/>
<mo>=</mo>
<mspace width="1em"/>
<mfrac>
<mrow>
<mi>r</mi>
<mi>n</mi>
</mrow>
<mi>N</mi>
</mfrac>
</mtd>
</mtr>
<mtr>
<mtd>
<mtext>mode</mtext>
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<mo>=</mo>
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<mtext>floor</mtext>
<mfenced>
<mrow>
<mfrac>
<mrow>
<mfenced>
<mrow>
<mi>r</mi>
<mo>+</mo>
<mn>1</mn>
</mrow>
</mfenced>
<mfenced>
<mrow>
<mi>n</mi>
<mo>+</mo>
<mn>1</mn>
</mrow>
</mfenced>
</mrow>
<mrow>
<mi>N</mi>
<mo>+</mo>
<mn>2</mn>
</mrow>
</mfrac>
</mrow>
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</mtd>
</mtr>
<mtr>
<mtd>
<mtext>variance</mtext>
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<mo>=</mo>
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<mfrac>
<mrow>
<mi>r</mi>
<mfenced>
<mrow>
<mfrac>
<mi>n</mi>
<mi>N</mi>
</mfrac>
</mrow>
</mfenced>
<mfenced>
<mrow>
<mn>1</mn>
<mo>&#x2212;</mo>
<mfrac>
<mi>n</mi>
<mi>N</mi>
</mfrac>
</mrow>
</mfenced>
<mfenced>
<mrow>
<mi>N</mi>
<mo>&#x2212;</mo>
<mi>r</mi>
</mrow>
</mfenced>
</mrow>
<mfenced>
<mrow>
<mi>N</mi>
<mo>&#x2212;</mo>
<mn>1</mn>
</mrow>
</mfenced>
</mfrac>
</mtd>
</mtr>
<mtr>
<mtd>
<mtext>skewness</mtext>
<mspace width="1em"/>
<mo>=</mo>
<mspace width="1em"/>
<mfrac>
<mrow>
<mfenced>
<mrow>
<mi>N</mi>
<mo>&#x2212;</mo>
<mn>2</mn>
<mi>n</mi>
</mrow>
</mfenced>
<msqrt>
<mfenced>
<mrow>
<mi>N</mi>
<mo>&#x2212;</mo>
<mn>1</mn>
</mrow>
</mfenced>
</msqrt>
<mfenced>
<mrow>
<mi>N</mi>
<mo>&#x2212;</mo>
<mn>2</mn>
<mi>r</mi>
</mrow>
</mfenced>
</mrow>
<mrow>
<msqrt>
<mrow>
<mi>r</mi>
<mi>n</mi>
<mfenced>
<mrow>
<mi>N</mi>
<mo>&#x2212;</mo>
<mi>n</mi>
</mrow>
</mfenced>
<mfenced>
<mrow>
<mi>N</mi>
<mo>&#x2212;</mo>
<mi>r</mi>
</mrow>
</mfenced>
</mrow>
</msqrt>
<mfenced>
<mrow>
<mi>N</mi>
<mo>&#x2212;</mo>
<mn>2</mn>
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</mfrac>
</mtd>
</mtr>
<mtr>
<mtd>
<mtext>kurtosis excess</mtext>
<mspace width="1em"/>
<mo>=</mo>
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<mfenced>
<mrow>
<mfrac>
<mrow>
<msup>
<mi>N</mi>
<mn>2</mn>
</msup>
<mfenced>
<mrow>
<mi>N</mi>
<mo>&#x2212;</mo>
<mn>1</mn>
</mrow>
</mfenced>
</mrow>
<mrow>
<mi>r</mi>
<mfenced>
<mrow>
<mi>N</mi>
<mo>&#x2212;</mo>
<mn>2</mn>
</mrow>
</mfenced>
<mfenced>
<mrow>
<mi>N</mi>
<mo>&#x2212;</mo>
<mn>3</mn>
</mrow>
</mfenced>
<mfenced>
<mrow>
<mi>N</mi>
<mo>&#x2212;</mo>
<mi>r</mi>
</mrow>
</mfenced>
</mrow>
</mfrac>
</mrow>
</mfenced>
<mfenced>
<mrow>
<mfrac>
<mrow>
<mi>N</mi>
<mfenced>
<mrow>
<mi>N</mi>
<mo>+</mo>
<mn>1</mn>
</mrow>
</mfenced>
<mo>&#x2212;</mo>
<mn>6</mn>
<mi>N</mi>
<mfenced>
<mrow>
<mi>N</mi>
<mo>&#x2212;</mo>
<mi>r</mi>
</mrow>
</mfenced>
</mrow>
<mrow>
<mi>n</mi>
<mfenced>
<mrow>
<mi>N</mi>
<mo>&#x2212;</mo>
<mi>n</mi>
</mrow>
</mfenced>
</mrow>
</mfrac>
<mo>+</mo>
<mfrac>
<mrow>
<mn>3</mn>
<mi>r</mi>
<mfenced>
<mrow>
<mi>N</mi>
<mo>&#x2212;</mo>
<mi>r</mi>
</mrow>
</mfenced>
<mfenced>
<mrow>
<mi>N</mi>
<mo>+</mo>
<mn>6</mn>
</mrow>
</mfenced>
</mrow>
<mrow>
<msup>
<mi>N</mi>
<mn>2</mn>
</msup>
</mrow>
</mfrac>
<mo>&#x2212;</mo>
<mn>6</mn>
</mrow>
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</mtd>
</mtr>
</mtable>
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