First Year ICS Statistics Chapter 8 Online MCQ Test (Probability Distributions)

This online test contains MCQs about following topics:

Introduction to probability distributions . Probility mass function . Probabilty density function . Simple univariate discrete and continuous distributions . Drawing of probability mass function and probability density function . Expectation and variance of the simple discrete random variable . Distribution function

ICS Part 1 Statistics Chapter 8 Test

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MCQ's Test For Chapter 8 "Statistics Ics Part 1 Chapter 8 Online Test"

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Statistics Ics Part 1 Chapter 8 Online Test

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Question # 1

If x is discrete random variable, then the function f (x) is.

Question # 2

A fair coin is tossed four times the probability of getting four heads is

Question # 3

When x denotes the number of success in binomial experiment it is called.

Question # 4

Probility density function is the probebilyt function of.............. random variable.

Question # 5

If C is a non -random variabe than E (C) is.

Question # 6

The mean of binomial distribution is always:

Question # 7

In a discriete probability distribution the sum of all the probabilities is alwyas

Question # 8

If the random variable X denotes the number of heads when three distinet coins are tossed,then X assumes the value.

Question # 9

Its value cannot be exactly examined.

Question # 10

Hypergeometric distribution is a

Question # 11

If we do not replace the draw cards back into the pack before the next draw, the used probability distribution will be:

Question # 12

Which of the following is true for binomial distribution

Question # 13

Binomial distribution is used when n is

Question # 14

Each trial of binomial experiment results in an outcome which can be classified in two categories

Question # 15

If in binomial distribution, μ = 6, p = 3/5, the number of trial are:

Question # 16

An expected value of a random variable is equal to its.

Question # 17

A fair die is rolled three times. The probability of getting three "aces" is

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ICS Part 1 Statistics Chapter 8 MCQs Test

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ICS Part 1 Statistics Chapter 8 Important MCQ's

Sr.# Question Answer
1 An expected value of a random variable is equal to its.
A. Variance
B. B.D.
C. Mean
D. Co - Variance
2 When we draw the sample with replacement (the first sample is replaced before the next draw), the probability distribution to be used is:
A. Binomial
B. Hypergeometric
C. Both Binomial & hypergeometric
D. None of these
3 Which of the following distribution(s) has 3 parameters.
A. Binomial distribution
B. Hypergeometric distribution
C. Both of the above 
D. None of these
4 The mean of binomial distribution is always:
A. Equal to variance
B. Less than variance
C. Greater then variance
D. None of the these
5 Binomial distribution is positively skewed
A. P < 1/2
B. P > 1/2
C. P = 1/2
D. P < q < 1/2
6 The probability of success ------------ from one trial to another when trials are dependent
A. Remains constant
B. Is changed
C. One
D. Zero
7 if X and Y are independent random varaibesl the S.D. (X-Y) is equal to
A. Var (X) - var (Y)
B. Var (X) + Var (Y)
C. E(X-Y)2
D. E(X + Y)2
8 If X and Y are random varaibes, than E ( X - Y) is equal to.
A. E(X) + E (Y)
B. E(X) - E(Y)
C. X - E (Y)
D. E(X) - Y
9 The probability of success changes from trial to trial, is the property of:
A. Binomial experiment
B. Hypergeometric experiment
C. Both A and B
D. None of these
10 Which of the following is true for binomial distribution
A. Mean > variance
B. Mean < variance
C. Mean = variance
D. Mean + standard deviation

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