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| View Original: | Scaled chi squared cdf.svg (216x216) | |||
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| Keywords: Scaled chi squared cdf.svg sample variance s<sup>2</sup> <math>s 2 \frac \;\sigma 2 \nu \; \chi_\nu 2</math> where s<sup>2</sup> is the mean of the squares of independent normal distributions of mean 0 and standard deviation ; plotted here for the case 1 0 Equivalently this is also a plot of the c d f for the variance ratio s<sup>2</sup>/ <sup>2</sup> for any value of 2012-10-21 11 16 43 own Created in R using the code fragment below Jheald cc-zero See also File Scaled chi squared svg Created with R v CairoSVG scaled_chi_squared cdf svg width 3 height 3 pointsize 8 x <- seq 0 5 by 0 02 par mar c 5 4 2 2 + 0 1 plot x pchisq 2 x 2 ty 'l' col brown ylab F x lines x pchisq x 1 ty 'l' col blue lines x pchisq 3 x 3 ty 'l' col red lines x pchisq 6 x 6 ty 'l' col green lines x pchisq 10 x 10 ty 'l' col black legend bottomright legend expression nu 1 nu 2 nu 3 nu 6 nu 10 lty 1 col c blue brown red green black bty n dev off Uploaded with UploadWizard Chi-square distribution | ||||
