You are provided with the following raw data of two variable \( x \...

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You are provided with the following raw data of two variable \( x \) and \( y \). \( \Sigma x=235, \Sigma y=250, \Sigma x^{2}=6750, \Sigma y^{2}=6840 \).
Ten pairs of values are included in the survey. The standard deviation are
(A) \( 11.08,7.68 \)
(B) \( 11.02,7.58 \)
(C) \( 11.48,7.48 \)
(D) none of these
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