[" If mean and standard deviation of "],...

[" If mean and standard deviation of "],[5" observations "x_(1),x_(2),x_(3),x_(4),x_(4)" are "10],[" and "3," respectively,then the variance of "],[6" observations "x_(1),x_(2),....,x_(5)" and "-50" is equal "],[" to "],[[" (a) "507.5," (b) "586.5," (c) "582.5" (d) "509.5]]

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If the mean and standard deviation of 5 observations x_(1),x_(2),x_(3),x_(4),x_(5) are 10 and 3 respectively,then the variance of 6 observations x_(1),x_(2),x_(3),x_(4),x_(5) and 50 is equal to

The mean and standard deviation of five observations x_(1),x_(2),x_(3),x_(4),x_(5) and are 10 and 3 respectively,then variance of the observation x_(1),x_(2),x_(3),x_(4),x_(5),-50 is equal to (a) 437.5 (b) 507.5 (c) 537.5 (d) 487.5

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[" If mean and standard deviation of "],[5" observations "x_(1),x_(2),x_(3),x_(4),x_(4)" are "10],[" and "3," respectively,then the variance of "],[6" observations "x_(1),x_(2),....,x_(5)" and "-50" is equal "],[" to "],[[" (a) "507.5," (b) "586.5," (c) "582.5" (d) "509.5]]

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