Statistics  RANDOM VARIABLE AND PROBABILITY DISTRIBUTIONS
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This is MCQs of statistics
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Question 1 of 36
1. Question
Discrete random variable is real valued function defined on a _________ sample space.
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Question 2 of 36
2. Question
E(ax + b) = A E(x) +__________
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Question 3 of 36
3. Question
If E (ax) = ______
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Question 4 of 36
4. Question
If E(x) is the expected value of X then E[x – E(x)]= ________
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Question 5 of 36
5. Question
The variance of randomvariable of x then var(x) = E[xE[x]^{2} = E[________]
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Question 6 of 36
6. Question
A random variable may be _____
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Question 7 of 36
7. Question
The basic random numbers are ______
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Question 8 of 36
8. Question
Two digit random numbers are ________
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Question 9 of 36
9. Question
The time taken by an athlete to run a 400 mile race in SAF games _______
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Question 10 of 36
10. Question
The mathematical exception of x + y is equal to ______
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Question 11 of 36
11. Question
______ are the numbers obtained by some random process.
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Question 12 of 36
12. Question
Experiment in which outcomes vary from trial to trial ________
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Question 13 of 36
13. Question
Random numbers are used for selection of ______
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Question 14 of 36
14. Question
A function probability that a random variable of x has a value less than is called________
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Question 15 of 36
15. Question
A random variable is that whose value is determined by the outcome of ______
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Question 16 of 36
16. Question
A continuous random variable which can assume all possible values on scale in a given ______
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Question 17 of 36
17. Question
A random variable is ____
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Question 18 of 36
18. Question
Random numbers are also called________
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Question 19 of 36
19. Question
Hourly temperature recorded by weather bureau is the example of ______
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Question 20 of 36
20. Question
The number of defective bulbs in a lot is example of ______
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Question 21 of 36
21. Question
Var (kY)= ________
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Question 22 of 36
22. Question
If a & b are constants, then Var (a + bX) equal to________
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Question 23 of 36
23. Question
For two independent random variables X & Y, Var (x ± y)=…….________
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Question 24 of 36
24. Question
For discrete random ‘X’, the expectation of X i.e., E(x) is equal to:________
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Question 25 of 36
25. Question
Coefficient of variation (C.V) is given below:______
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Question 26 of 36
26. Question
A discrete probability distribution may be represented by
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Question 27 of 36
27. Question
If c is nonrandom variable, the E(C) is
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Question 28 of 36
28. Question
For a random variable X, E(X) is
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Question 29 of 36
29. Question
The probability function is always
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Question 30 of 36
30. Question
Probability of occurrence of an event lies between
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Question 31 of 36
31. Question
Probability distribution of a random variable is also know as Probability
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Question 32 of 36
32. Question
Total Area under the curve in probability of density function is?
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Question 33 of 36
33. Question
For a probability density function (pdf), the probability of a single point is
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Question 34 of 36
34. Question
The distribution function F(X) is represent by
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Question 35 of 36
35. Question
What is the probability that a ball drawn at random from a jar?
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Question 36 of 36
36. Question
For distribution Function F(X),F(∞)=0 and F(∞)= ?
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