Que.Which of the following condition should be satisfied by function for pmf?
|
a. The sum of all of the possible values is 1 |
b. The sum of all of the possible values is 0 |
c. The sum of all of the possible values is infinite |
d. All of the mentioned |
The sum of all of the possible values is 1
Que.Which of the following function is associated with a continuous random variable?
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a. pdf |
b. pmv |
c. pmf |
d. all of the mentioned |
Que.Statistical inference is the process of drawing formal conclusions from data.
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a. True |
b. False |
c. May be True or False |
d. Can’t say |
Que.The expected value or _______ of a random variable is the center of its distribution.
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a. mode |
b. median |
c. mean |
d. bayesian inference |
Que.Point out the correct statement.
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a. Some cumulative distribution function F is non-decreasing and right-continuous |
b. Every cumulative distribution function F is decreasing and right-continuous |
c. Every cumulative distribution function F is increasing and left-continuous |
d. None of the mentioned |
Que.Which of the following of a random variable is a measure of spread?
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a. variance |
b. standard deviation |
c. empirical mean |
d. all of the mentioned |
Que.The square root of the variance is called the ________ deviation.
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a. empirical |
b. mean |
c. continuous |
d. standard |
Que.Point out the wrong statement.
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a. A percentile is simply a quantile with expressed as a percent |
b. There are two types of random variable |
c. R cannot approximate quantiles for you for common distributions |
d. None of the mentioned |
R cannot approximate quantiles for you for common distributions
Que.Which of the following inequality is useful for interpreting variances?
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a. Chebyshev |
b. Stautaory |
c. Testory |
d. All of the mentioned |
Que.For continuous random variables, the CDF is the derivative of the PDF.
|
a. True |
b. False |
c. May be True or False |
d. Can’t say |