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## First Year Statistics Chapter 7 Online MCQ Test for 1st Year Statistics Chapter 7 (Random Variables)

This online test contains MCQs about following topics:

Introduction to random variables . Random numbers and their generation . Application of random number . Concept of random variable and their construction from different fields . Discreate and continuous random variables

#### ICS Part 1 Statistics Chapter 7 Test

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### First Year Statistics Chapter 7 Online MCQ Test for 1st Year Statistics Chapter 7 (Random Variables)

1 If x and y are independent random variables, then E(xy)
• A. E(xy)
• B. xE(y)
• C. E(x)
• D. E(x)E(y)
2 When two dice are rolled, the maximum totla on the two faces of dice will be.
• A. 2
• B. 6
• C. 12
• D. 36
3 For a constant k, the variance of k is
• A. zero
• B. k<sup>2</sup>
• C. k
• D. none of these
4 Waht is the probability that a ball drawn at random from the bag is.
• A. 0.1
• B. 0.4
• C. 1.0
• D. Cannot be determined from given information
5 The probability of getting one red ball from a bag constaining 4 red, 3 white and 3 black balls is.
• A. 3/10
• B. 1/5
• C. 2/5
• D. 1/2
6 The probability of getting an odd number when a balanced die is rolled is.
• A. 1/2
• B. 1/3
• C. 1/4
• D. 1/6
7 For a constant K ,the variance of K.
• A. Zero
• B. A<sup>-2</sup>
• C. K
• D. None of these
8 Is the tossing of two perfect coins the probability at least one head occur is.
• A. 1/4
• B. 1
• C. 1/2
• D. 3/4
9 A lettter is chosen at random from the word STATITICS , The probability of getting a vowel is.
• A. 1/5
• B. 3/10
• C. 1/2
• D. 2/5
10 The sum of probabilities of events of a sample space is always.
• A. Equal
• B. Discrete
• C. Continuous
• D. Always greater then oen

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