First Year ICS Statistics Chapter 7 Online MCQ Test (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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MCQ's Test For Chapter 7 "Statistics Ics Part 1 Chapter 7 Online Test"

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Statistics Ics Part 1 Chapter 7 Online Test

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Question # 1

The probability of a continuous random variable at x = a is ---------------

Question # 2

For a constant k, the variance of k is

Question # 3

A probability function is _________ function.

Question # 4

The probability distribution of discrete random variable is called is

Question # 5

E(Y2) -[E(y)]2 is the formula, and to compute.

Question # 6

Variance of σ2 is equal E to (Y2) - _______?

Question # 7

Which of the following is suitable for discrete probability distribution.

Question # 8

When a die and a coin are rolled together all possible outcomes are.

Question # 9

The probability of drawan any one spade card is.

Question # 10

When two dice are rolled, the numebr of possible sample points is.

Question # 11

Var (3x + 2)

Question # 12

If the random variable x denotes the number of heads of when three distinct coins are tossed k the X assumes values.

Question # 13

For two independent random variables, Var(x) = 14 and Var(Y ) = 5, then var (X-y) is equal to.

Question # 14

For a constant K ,the variance of K.

Question # 15

Var (KY) = ......................

Question # 16

E(x - μ) is equal to:

Question # 17

What is the probability that a value chosen at random from a particular population is larger than the median of the popultion.

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ICS Part 1 Statistics Chapter 7 MCQs Test

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ICS Part 1 Statistics Chapter 7 Important MCQ's

Sr.# Question Answer
1 Why are the outcomes of a coin tossing mutually exclusive.
A. The outcome of any toss is not affected by teh outcome of those preceding it.
B. Both a head and a tail cannot turn up on any one toss
C. The probability of getting a head and the probability of getting a tail is the same.
D. All of these
2 For discrete random variable 'X' the expectation of X I-e E(x) is equal to:
A. Σp(x)
B. Σxp(x)
C. Σx2p(x)
D. One
3 the term 'event' is used for.
A. Time
B. Subaet of the sample space
C. Total number of outcomes
D. Probability
4
Question Image
A. y1 = y2
B. Y1 > y2
D. None of these
5 If y =-7x then E(y) = ...............
A. E(x)
B. -7X
C. -7E(X)
D. Zero
6 When a pair of dice is rolled, the sum of upperemost dots vary from.
A. 0 to 10
B. 1 to 11
C. 2 to 19
D. 2 to 12
7 probability distribution of a continuous random variable can be presented by.
A. Formula 
B. Curve
C. Tabular form
D. None of these
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 A random variable is also called.
A. Chance variable
B. Stochastic variable
C. Discrete variable
D. Both A and B
10 When two coins are tossed simultaneously, P (one head ) is.
A. 1/2
B. 1/4
C. 3/4
D. 1.0

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