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Statistics question

2023 · 6 Apr · Shift 2 · Q37
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Statistics question

2023 · 6 Apr · Shift 2 · Q37

JEE MainMathematicsStatisticsNumerical+4 / −1

If the mean and variance of the frequency distribution

xix_ixi​ 2 4 6 8 10 12 14 16
fif_ifi​ 4 4 α\alphaα 15 8 β\betaβ 4 5

are 9 and 15.08 respectively, then the value of α2+β2−αβ\alpha^2+\beta^2-\alpha\betaα2+β2−αβ is ‾\underline{\hspace{2cm}}​.

Numerical answer
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