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Title: GH-102670: Use sumprod() to simplify, speed up, and improve accuracy of statistics functions by rhettinger · Pull Request #102649 · python/cpython · GitHub

Open Graph Title: GH-102670: Use sumprod() to simplify, speed up, and improve accuracy of statistics functions by rhettinger · Pull Request #102649 · python/cpython

X Title: GH-102670: Use sumprod() to simplify, speed up, and improve accuracy of statistics functions by rhettinger · Pull Request #102649 · python/cpython

Description: Use sumprod() which is faster, simpler, and more accurate than rounding each multiplication before summation. For an additional speed-up and simplification, compute the (x_xi - bar) only once inste...

Open Graph Description: Use sumprod() which is faster, simpler, and more accurate than rounding each multiplication before summation. For an additional speed-up and simplification, compute the (x_xi - bar) only once inste...

X Description: Use sumprod() which is faster, simpler, and more accurate than rounding each multiplication before summation. For an additional speed-up and simplification, compute the (x_xi - bar) only once inste...

Opengraph URL: https://github.com/python/cpython/pull/102649

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Use sumprod() to speed-up and improve accuracy of correlation()https://github.com/python/cpython/pull/102649/commits/3f2fd8d53da13a0278a7540edc6ffa68baab74be
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Only compute differences oncehttps://github.com/python/cpython/pull/102649/commits/3241045212b341ca3396eff48b5db1ddce75efed
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Use sumprod() in covariance().https://github.com/python/cpython/pull/102649/commits/52c75847b952c91c948435969fc3dad79567e55a
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Use sumprod() in linear_regression().https://github.com/python/cpython/pull/102649/commits/16b2745301a6212dd9eb0cce646255fc35bccb9d
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pythonGH-102649https://github.com/python/cpython/pull/102649
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https://github.com/python/cpython/pull/102649/files/45ffe7e100011b92c0fb073cb4ca6b71f9b52de9
3.12 https://github.com/python/cpython/issues?q=state%3Aopen%20label%3A3.12
performance https://github.com/python/cpython/issues?q=state%3Aopen%20label%3Aperformance
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