7th Chapter

## 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 The Area of trapezoid is equal to:
• A. sum of paralled sides x base
• B. sum of paralled sides x base/2
• C. 2 x base x sum of paralled side&nbsp;
• D. Sum of paralled sides x base/4
2 &nbsp;Var (3x+2)
• A. 3Var(x) + 2
• B. &nbsp;9Var(x) +2
• C. Var (x) + 0&nbsp;
• D. 3Var (X)
3 The coins are tossed, the porbability of two tails is euql to.
• A. 1/2
• B. 1/4
• C. 3/4
• D. 1
4 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
5 the collection of all possible outcome of a random experimnet is called.
• A. Sample point
• B. Sure event
• C. sample event
• D. simple event
6 The sum of probabilities of events of a sample space is always.
• A. Equal
• B. Discrete
• C. Continuous
• D. Always greater then oen
7 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>) is equal to
• A. E(y)
• B. <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>
• C. zero
• D. 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>
8 The probability of drawing a king of spade from a pack of 52 cards is.
• A. 1/4
• B. 1/13
• C. 1/26
• D. 1/52
9 F (+∞) is always equal to:
• A. 0
• B. Two
• C. One&nbsp;
• D. None of these
10 For a constant k, the variance of k is
• A. zero
• B. k<sup>2</sup>
• C. k
• D. none of these

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