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

E(y-μ) is equal to

Question # 2

The properties of discrete probability distribution are:

Question # 3

The numbered balls are paced in an urn, Numbers 1- 4 are red and numbers 5 -10 are blue. the probability that a ball drawn at random from the run is blue is.

Question # 4

Tossing two dice possble sampes are.

Question # 5

Variance σ2 is equal to E(y2) -  --------------------

Question # 6

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

Question # 7

When two dice are rolled, the maximum totla on the two faces of dice will be.

Question # 8

Probability distribution of a continuous random variable can be presented by

Question # 9

If x is a random variable with E(x) = 5 then E(3x - 2) =

Question # 10

The range of probability is between

Question # 11

The simplest form of the continues distribution is the

Question # 12

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

Question # 13

If a is a constant then E(a) is equal to

Question # 14

If y =-7x then E(y) = ...............

Question # 15

F (+∞) is always equal to:

Question # 16

The probability of continuous random variable at x = a is__________.

Question # 17

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

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ICS Part 1 Statistics Chapter 7 MCQs Test

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ICS Part 1 Class Statistics Chapter 7 Important MCQ's

Sr.# Question Answer
1 Variance of σ2 is equal E to (Y2) - _______?
A. E (y)
B. [E(y)]2
C. E(y2)
D. None of these
2 If mean = 25 and variance is also 25, then coefficient of variation is
A. 100%
B. 25%
C. 20%
D. 10%
3 The probability of getting two red balls with replacement from a bag containing 4 red, 3 white and 3 black balls is.
A. 4/25
B. 1/25
C. 9/100
D. 2/25
4 The numbered balls are paced in an urn, Numbers 1- 4 are red and numbers 5 -10 are blue. the probability that a ball drawn at random from the run is blue is.
A. 0.1
B. 0.4
C. 0.6
D. 1.0
5 The simplest form of the continuous distribution is the.
A. Skewed distribution
B. Kurtic distribution
C. Binomial distribution
D. Uniform distribution
6 The range of probability is between
A. 0 to 2
B. -1 to +1
C. 0 to 8
D. 0 to 1
7 Variance σ2 is equal to E(y2) -  --------------------
A. E(y)
B. [E(y)]2
C. E(y)2
D. E2 (y)
8 For a constant k, the variance of k is
A. zero
B. k2
C. k
D. none of these
9 A set of numerical values assigned to a sample space is called.
A. Random sample
B. Random variable
C. Random numbers
D. Random experiment
10 The simple probability of occurrence of an event in called the.
A. Joint probability
B. Conditional probability
C. Marginal probability
D. Subjective probability

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