In simple random sampling from a population of N units, the probability of drawing any unit at the first draw is  ______.

(a)

\(\frac{n}{N}\)

(b)

\(\frac{1}{N}\)

(c)

\(\frac{N}{n}\)

(d)

1

In ________ the heterogeneous groups are divided into homogeneous groups.

(a)

Non-probability sample

(b)

a simple random sample

(c)

a stratified random sample

(d)

systematic random sample

If probability \(P[|\hat{\theta}-\theta|<\varepsilon] \rightarrow 1\) as \(n \rightarrow \infty\), for any positive \(\varepsilon \) then \(\hat{\theta}\) is said to ________ estimator of \(\theta\).

(a)

efficient

(b)

sufficient

(c)

unbiased

(d)

consistent

An estimator is said to be ________ if it contains all the information in the data about the parameter it estimates.

(a)

efficient

(b)

sufficient

(c)

unbiased

(d)

consistent

An estimate of a population parameter given by two numbers between which the parameter would be expected to lie is called an………..interval estimate of the parameter.

(a)

point estimate

(b)

interval estimation

(c)

standard error

(d)

confidence