STA301 Quiz Statistics [2]

STA301 Quiz Statistics


Question # 1
A standard deviation obtained from sampling distribution of sample statistics is known as
Select correct option:
Sampling error
Standard error
Minimum error
Universal error



Question # 2
A parameter is a ..... quantity.
Select correct option:
Constant
Variable
Sample
Random



Question # 3
How can you define statistical inference?
Select correct option:
A decision, estimate, prediction or generalization about the population based on information contained in a sample
A statement made about a sample based on the measurements in that sample
A set of data selected from a larger set of data
A decision, estimate, prediction or generalization about sample based on information contained in a population



Question # 4
Which of the following is most important and most widely used method in point estimation?
Select correct option:
The method of moments
The method of fractional moments
The method of leas square
The method of maximum likelihood



Question # 5
The location and shape of the normal curve is (are) determined by:
Select correct option:
Mean
Variance
Mean & variance
Mean & standard deviation



Question # 6
A discrete probability function f(x) is always:
Select correct option:
Zero
One
Negative
Non-negative



Question # 7
Binomial distribution is skewed to the right if:
Select correct option:
p=q
P p>q
p=n



Question # 8
In a discrete distribution function, F(23) can be stated as:
Select correct option:
P (there are at most 23 successes)
P (there are at least 23 successes)
P (there are less than 23 successes)
P (there are more than 23 successes)


Question # 9
The Probabilities of the various values of the sample satistic can be computed using the......... definition of probability.
Select correct option:
Subjective
Objective
Classical
None of the baove



Question # 10
E(10X +3) =_______
Select correct option:
10 E(X)
E(X)+3
10 E(X)+3
100E(X)