Statistics Ics Part 1 Online Test With Answers

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Statistics Ics Part 1 Online Test

Sr. # Questions Answers Choice
1 In binomial distribution, the random variable  has a range: 0,1,2...................n 0,1,2,......+∞ -∞ to +∞ ∞ to +0
2 In binomial experiment successive trials are: Dependent Independent May be independent or dependent None of these
3 Var (B/aX) =? 1/aVar(X) b<sup>2</sup>/a<sup>2</sup> Var(X) b<sup>2</sup>/a Var(X) None of these
4 F (+∞) is always equal to: 0 Two One&nbsp; None of these
5 Hourly temperature recorded by weather brave is the example of: Discrete variable Continuous variable Qualitative Both A and B
6 For two independent random variables, Var(x) = 14 and Var(Y ) = 5, then var (X-y) is equal to. 9 70 19 None of these
7 E(Y2) -[E(y)]2 is the formula, and to compute. Variance of the random variable Mean of the random variable Both A and B None of these
8 If y =-7x then E(y) = ............... E(x) -7X -7E(X) Zero
9 The properties of discrete probability distribution are: Σp (x) = 1 and&nbsp;Σx. (x) = 1 ΣP (x)= 1 and&nbsp;Σx. P ΣP(x) = 1 and 0 &lt; P(x)&nbsp;≤ 1 All of these above
10 The Area of trapezoid is equal to: sum of paralled sides x base sum of paralled sides x base/2 2 x base x sum of paralled side&nbsp; Sum of paralled sides x base/4
11 Coefficient  of variation (C.V) is given below Mean /S.D x10 Mean/S.D x 100 S.D/Mean x 100&nbsp; S.D/ Mean&nbsp;
12 For discrete random variable 'X' the expectation of X I-e E(x) is equal to: Σp(x) Σxp(x) Σx<sup>2</sup>p(x) One
13 Var (KY) = ...................... KY K<sup>2</sup> Var(Y) K<sup>2</sup>Var (Y) None of these
14 E(X ± Y) =.............. E(X) + E(Y) E(X) - E (Y) E(x)&nbsp;± E (Y) None of these
15 A random variable is also called. Chance variable Stochastic variable Discrete variable Both A and B
16 Which of the following is suitable for discrete probability distribution. Frequency polygon Probability Ogive Histogram
17 The sum of probabilities of events of a sample space is always. Equal Discrete Continuous Always greater then oen
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