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Question 15 Let ¯x be the mean of x1,x2,……xn, and ¯y be the mean of y1,y2,……yn. If ¯z represents the mean of x1,x2,……xn,y1,y2,……yn, then ¯z is equal to: A) ¯x+¯y B) ¯x+¯y2 C) ¯x+¯yn D) ¯x+¯y2n |
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Answer» Question 15 Let ¯x be the mean of x1,x2,……xn, and ¯y be the mean of y1,y2,……yn. If ¯z represents the mean of x1,x2,……xn,y1,y2,……yn, then ¯z is equal to: A) ¯x+¯y B) ¯x+¯y2 C) ¯x+¯yn D) ¯x+¯y2n |
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