Statistics Ics Part 1 Online Test With Answers

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Statistics Ics Part 1 Online Test

Sr. # Questions Answers Choice
1 In a discriete probability distribution the sum of all the probabilities is alwyas 0 1 -1 8
2 The probabilyt density function p (x) cannot exced. zero One Mean Infinity
3 Probility density function is the probebilyt function of.............. random variable. Discrete Qualitative Continuous None
4 Random numbers are generated from the single digit numbers. { 1,2,3,............. 10 } { 0, 1,2,.......................... 10} { 0,1,2.............} {0,1,2,............. 9}
5 The probabilyt that a continous random varaibe 'x ' takes on specific value of x is. Greater thaan zero Less than zero Equal to Zero 0 to 1
6 An expected value of a random variable is equal to its. Variance B.D. Mean Co - Variance
7 If C is a non -random variabe than E (C) is. c 0 1 x
8 If (E(X) = E than find arithmetic means will be. 1 4 0 8
9 If X and Y are independent random variables , the E (XY) is equal to. E(XY) E(X) E(Y) XE(Y) YE(X)
10 if X and Y are independent random varaibesl the S.D. (X-Y) is equal to Var (X) - var (Y) Var (X) + Var (Y) E(X-Y)2 E(X + Y)2
11 If X and Y are random varaibes, than E ( X - Y) is equal to. E(X) + E (Y) E(X) - E(Y) X - E (Y) E(X) - Y
12 The expected value of a discrete random variable is. Always an integer Always one of the values that the random variable can assume An interal of values None of these
13 If x is a continuous random vriable, then the function f (x) is. A probability function A probability denaity function A density function Both b and c
14 If x is discrete random variable, then the function f (x) is. A probability function A density function A probability density function A distribution function
15 If the random variable X denotes the number of heads when three distinet coins are tossed,then X assumes the value. 0.1.2.3 1,3,3,1 1,2,3 None of these
16 A copntinuous probability distribution may be represented by. A table a graph A mathmethical equation Botha b and c
17 the discrete probability distributio may be represented by. A table A graph A mathematical equation All of these
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