1. If a, b, c, d are in G.P. then the value of b(ab-cd)-(c+a)(b2 -c2 ) is ____ (A) 0 (B) 1 (C) –1 (D) None 2. Which of the following statements is true? (i) Usually mean is the best measure of central tendency (ii) Usually median is the best measure of central tendency (iii) Usually mode is the best measure of central tendency (iv) Normally, GM is the best measure of central tendency 3. What is the coefficient of variation of the following numbers? 53, 52, 61, 60, 64. (a) 8.09 (b) 18.08 (c) 20.23 (d) 20.45
Posted on: Sun, 26 Jan 2014 15:21:11 +0000
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