Statistical Analysis-Sampling [NTA-NET (UGC-NET) Environmental Science (89)]: Questions 1 - 3 of 6

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Question 1

Appeared in Year: 2019

Question MCQ▾

Consider the following statements regarding sampling: (December)

(i) The sample mean is an unbiased estimate of the population mean.

(ii) For small samples, the sample variance is an unbiased estimate of the population variance.

(iii) If we reject the null hypothesis when it is actually true, we commit the type-I error in testing the hypothesis.

Which of the above statements are correct?

Choices

Choice (4)Response

a.

(i) , (ii) and (iii) only

b.

(i) and (iii) only

c.

(i) and (ii) only

d.

(ii) and (iii) only

Edit

Question 2

Appeared in Year: 2015

Question MCQ▾

Which One of the following is nonprobability sampling? (December)

Choices

Choice (4)Response

a.

Stratified

b.

Systemic

c.

Cluster

d.

Convenience probability

Edit

Question 3

Appeared in Year: 2020

Question MCQ▾

Consider the following statements pertaining to sampling theory:

(1) The standard deviation of the sampling distribution of a statistic is known as its standard error.

(2) The precision of the sample estimate of some population parameter is the reciprocal of the standard error of the sampling distribution of the estimate

(3) Type- I error in hypothesis testing occurs when we accept a wrong null hypothesis

(4) Type - II error in hypothesis testing occurs when we reject a true null hypothesis

Choose the correct answer from the options given below

Choices

Choice (4)Response

a.

3 and 4 only

b.

2 and 3 only

c.

1 and 3 only

d.

1 and 2 only

Edit