If the variance of the terms in an increasing A.P. b?,b?,b?,...,b?? is 90, then the common difference of this A.P. is
If the variance of the terms in an increasing A.P. b?,b?,b?,...,b?? is 90, then the common difference of this A.P. is
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V
Vishal Baghel
(Var)new = k² (Var)old
= 4 * 5 = 20
A
alok kumar singh
S.D. = √ (∑? ¹? (x? -p)²/10) - (∑? ¹? (x? -p)/10)²
√9/10 - (3/10)² = √9/10 - 9/100
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