#### 12th Standard Business Maths Sampling techniques and Statistical Inference English Medium Free Online Test One Mark Questions 2020 - 2021

12th Standard

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Time : 00:10:00 Hrs
Total Marks : 10

10 x 1 = 10
1. A ________ may be finite or infinite according as the number of observations or items in it is finite or infinite.

(a)

Population

(b)

census

(c)

parameter

(d)

none of these

2. A finite subset of statistical individuals in a population is called ________.

(a)

a sample

(b)

a population

(c)

universe

(d)

census

3. Which one of the following is probability sampling

(a)

purposive sampling

(b)

judgment sampling

(c)

simple random sampling

(d)

Convenience sampling

4. 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

5. _______ is a relative property, which states that one estimator is efficient relative to another.

(a)

efficiency

(b)

sufficiency

(c)

unbiased

(d)

consistency

6. The central limit theorem states that the sampling distribution of the mean will approach normal distribution __________

(a)

as the size of the population increases

(b)

as the sample size increase and becomes larger

(c)

as the number of samples gets larger

(d)

as the sample size decreases

7. Which of the following statements is true?

(a)

point estimate gives a range of value

(b)

sampling is done only to estimate a statistic

(c)

sampling is done to estimate the population parameter

(d)

sampling is not possible for an infinite population

8. Out of 1000 T.V viewers, 320 watched a particular programme. Then the standard error is __________

(a)

-0.147

(b)

0.147

(c)

0.0147

(d)

-0.0147

9. The point estimate variance of 21, 25, 20, 16, 12, 10, 17, 18, 13 and 11 is _______

(a)

23.5

(b)

2.35

(c)

4.85

(d)

48.5

10. An _______ is a specific observed value of a statistic

(a)

Estimation

(b)

Estimator

(c)

Estimate

(d)

Testing of hypothesis