11th class Statistics chapter 7 online mcq test with answers for ICS part 1 Statistics chapter 7(Random Variables)

Statistics Ics Part 1 Chapter 7 Online Test

Sr. #	Questions	Answers Choice
1	Which of the following is suitable for discrete probability distribution.	Frequency polygon Probability Ogive Histogram
2	The sum of probabilities of events of a sample space is always.	Equal Discrete Continuous Always greater then oen
3	A probability function is _________ function.	Mathematical Mathematical expectation Converges None of these
4	If x is a random variable with E(x) = 5 then E (3x - 2) =	0 1 13 15
5	The probability of continuous random variable at x = a is__________.	One Zero Between More then one
6	The simplest form of the continuous distribution is the.	Skewed distribution Kurtic distribution Binomial distribution Uniform distribution
7	For a constant K ,the variance of K.	Zero A<sup>-2</sup> K None of these
8	Which one is not an example of random experiments.	A coin is tossed and the outcome is either a head or a tail A six sided aid is rolled All medical insurance clams received by a company in a given year. Some one of person will be admitted to a hospital emergency room during any hour.
9	If the random variable x denotes the number of heads of when three distinct coins are tossed k the X assumes values.	0,1,2,3 1,3,3,1 1,2,3 1,1,1,1
10	If x and y are independent random variables, E(xy)	E(XY) xE(y) E(XY) E(X) . E(Y)
11	E(x) = Σxf(x) if it ________ absolutely.	Equal Converges Discrete  None of these
12	Random variable is also called ___________.	Chance stochasitc Coverges  Random None of these
13	E(x - μ) is equal to:	E(x) zero  μ X - μ
14	probability distribution of a continuous random variable can be presented by.	Formula  Curve Tabular form None of these<div><br></div>
15	F(-∞) is always equal to.	Zero One Two  Negative one
16	F(y₁) ≤ F(y₂) if	y<sub>1</sub>= y<sub>2</sub> Y<sub>1</sub>>y<sub>2</sub> y<sub>1</sub>≤y<sub>2</sub> y≥1/2
17	Variance of σ² is equal E to (Y²) - _______?	E (y) [E(y)]<sup>2</sup> E(y<sup>2</sup>) None of these

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