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CS108 Quiz 2 Flashcards | StudBud
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CS108 Quiz 2
CS108 Quiz 2
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Questions
10
Answers
1
We can apply delta method on each distribution, e.g. normal, exponential, uniform.
False
True
2
We have a sequence of IID random variables _{X_i}. According to the central limit theorem
\overline{X} has variance of ^{σ^2} the same, as for each _{X_i}
_{X_i} is distributed normally
all answers are correct
\overline{X} is distributed normally
3
The weak law of large numbers uses
mean convergence
convergence in probability
almost sure convergence
convergence in distribution
4
Which of the following is a discrete probability distribution?
Binomial distribution
Uniform distribution
Normal distribution
Exponential distribution
5
Suppose X~N(1,4) and Y~N(0,9) are independent. Then Z = X +Y is distributed
N(1,13)
N(1,9)
N(0,36)
we can't determine
6
Mean and variance of Poisson’s distribution is the same.
False
True
7
The terms descriptive statistics and inferential statistics can be used interchangeably.
False
True
8
Convergence in probability will imply
mean convergence
all answers are wrong
almost sure convergence
convergence in distribution
9
We have a QQ-plot sample against normal. We conclude that data has normal distribution.
False
True
10
What is the area under a conditional Cumulative density function?
changes with CDF
0
infinity
1
