FREE Master of Data Science: Statistical Inference & Regression Models Questions and Answers

Question 1

Given that beliefs adhere to specific laws, which of the following best describes the probability calculus of beliefs?

Accepted Answer

Bayesian probability

Answer

Bayesian inference

Answer

Frequency inference

Answer

Frequency probability

Question 2

Identify the accurate statement.

Accepted Answer

Bayesian inference is the use of Bayesian probability representation of beliefs to perform inference

Answer

Frequency inference is the use of Bayesian probability representation of beliefs to perform inference

Answer

NULL is the standard missing data marker used in S

Answer

None of the above

Question 3

Which of the aforementioned is a random variable?

Accepted Answer

All of the above

Answer

The outcome of exam

Answer

The outcome of flip of a coin

Answer

The outcome from the roll of a die

Question 4

Which one of the following random variables has a finite number of possible outcomes?

Accepted Answer

Discrete

Answer

Continuous

Answer

Non Discrete

Answer

All of the above

Question 5

The center of the distribution of a random variable is its anticipated value, or .

Accepted Answer

mean

Answer

median

Answer

mode

Answer

bayesian inference

Question 6

Identify the accurate statement.

Accepted Answer

None of the above

Answer

Every cumulative distribution function F is increasing and left-continuous

Answer

Every cumulative distribution function F is decreasing and right-continuous

Answer

Some cumulative distribution function F is non-decreasing and right-continuous

Question 7

Which of the following describes a random variable's spread?

Accepted Answer

variance

Answer

empirical mean

Answer

standard deviation

Answer

All of the above

Question 8

The term "_______ deviation" refers to the square root of variance.

Accepted Answer

standard

Answer

continuous

Answer

mean

Answer

empirical

Question 9

The degrees of freedom in the Chi-squared distribution are twice as many.

Accepted Answer

variance

Answer

mode

Answer

standard deviation

Answer

None of the above

Question 10

Identify the accurate statement.

Accepted Answer

All of the above

Answer

An estimator is consistent if it converges to what you want to estimate

Answer

Asymptotics often lead to nice understanding of procedures

Answer

Asymptotics are incredibly useful for simple statistical inference and approximations