If E (ax) = _______________?
Correct answer: B. a E(x)
- A. A
- B. a E(x)
- C. x E(a)
- D. Non of these
Explanation
A constant factor can be taken outside an expectation, giving E(ax) = aE(x). This is the scaling property of expected value.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
Practise Probability Distributions
132 free Probability Distributions MCQs from Statistics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Statistics questions like this
Statistics is on this paper prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for it.
More Probability Distributions questions
Total Area under the curve in probability of density function is ?
A listing of the possible outcomes of an experiment and their corresponding probability is called:______________?
In a Poisson probability distribution __________________?
A random variable is that whose value is determined by the outcome of _________________?
Random numbers are also called__________________?
A continuous random variable which can assume all possible values on scale in a given _______________?