Statistics Ics Part 1 Online Test With Answers

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Statistics Ics Part 1 Online Test

Sr. # Questions Answers Choice
1 Binomial distribution is used when n is Large Small Negative Zero
2 If x and y are independent random variables, then E(xy) E(xy) xE(y) E(x) E(x)E(y)
3 If the random variable x denotes the number of heads when three distinct coins are tossed, the x assumes values 0, 1, 2, 3 1, 3, 3, 1 1, 2, 3 None of these
4
4/10 2/10 1/10 0
5 If mean = 25 and variance is also 25, then coefficient of variation is 100% 25% 20% 10%
6 If x is a random variable with E(x) = 5 then E(3x - 2) = 0 1 13 All of them
7
8 0 1/8 3
8 For a constant k, the variance of k is zero k<sup>2</sup> k none of these
9 E(y-μ) is equal to E(y) <span style="color: rgb(0, 0, 0); font-family: 'Lucida Sans Unicode', 'Lucida Grande', sans-serif; font-size: 18px; line-height: 23.390625px;">μ</span> zero y-<span style="color: rgb(0, 0, 0); font-family: 'Lucida Sans Unicode', 'Lucida Grande', sans-serif; font-size: 18px; line-height: 23.390625px;">μ</span>
10 If a is a constant then E(a) is equal to a Square of a Zero 2a
11 Probability distribution of a continuous random variable can be presented by tabular form Formula Curve None of these
12 Var (3x + 2) 3 Var(X) + 2 3 Var X 9 var (x) + 2 9 var (x)
13 The probability of a continuous random variable at x = a is --------------- One Zero Between 0 and 1 More than one
14 The probability distribution of discrete random variable is called is Frequency distribution Probability distribution Probability mass function Both (a) and (b)
15 The simplest form of the continues distribution is the Skewed distribution Kurtic distribution Binomial distribution Uniform distribution
16 Variance σis equal to E(y2) -  -------------------- E(y) [E(y)]<sup>2</sup> E(y)<sup>2</sup> E<sup>2</sup> (y)
17 y<sub>1</sub> = y<sub>2</sub> Y<sub>1</sub> &gt; y<sub>2</sub> None of these
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