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In ancient times, some local forms of the Greek alphabet used the chi instead of xi to represent the /ks/ sound. This was borrowed into the early Latin language, which led to the use of the letter X for the same sound in Latin, and many modern languages that use the Latin alphabet .
The Chi Rho (☧, English pronunciation / ˈ k aɪ ˈ r oʊ /; also known as chrismon [1]) is one of the earliest forms of the Christogram, formed by superimposing the first two (capital) letters—chi and rho (ΧΡ)—of the Greek ΧΡΙΣΤΟΣ (rom: Christos) in such a way that the vertical stroke of the rho intersects the center of the chi.
The Chi (/ ˈ ʃ aɪ / SHY; stylized in all caps) is an American drama television series created by Lena Waithe about life in a neighborhood on the South Side of Chicago. [4] It premiered on Showtime on January 7, 2018. In August 2022, the series was renewed for a sixth season. [5]
By the central limit theorem, because the chi-squared distribution is the sum of independent random variables with finite mean and variance, it converges to a normal distribution for large . For many practical purposes, for k > 50 {\displaystyle k>50} the distribution is sufficiently close to a normal distribution , so the difference is ...
The chi distribution describes the positive square roots of a variable obeying a chi-squared distribution. If , …, are independent, normally distributed random variables with mean 0 and standard deviation 1, then the statistic = =
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A chi-squared test (also chi-square or χ 2 test) is a statistical hypothesis test used in the analysis of contingency tables when the sample sizes are large. In simpler terms, this test is primarily used to examine whether two categorical variables ( two dimensions of the contingency table ) are independent in influencing the test statistic ...
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