Statistical Analysis-Attributes and Variables [NTA-NET (UGC-NET) Environmental Science (89)]: Questions 1 - 4 of 14
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Question 1
Appeared in Year: 2020
Question MCQ▾
In an objective type examination, hundred questions are given, one mark is given for each correct answer while 0.2 marks are deducted for each incorrect answer. The numbers of marks scored by students appearing in the examinations is an example of:
Choices
Choice (4) | Response | |
---|---|---|
a. | Nominal variable | |
b. | Discrete variable | |
c. | Continuous variable | |
d. | Ordinal variable |
Question 2
Appeared in Year: 2019
Question MCQ▾
If x and y are two variables that are not independent, then which of the following represents the variance of their linear combination where ‘a’ and ‘b’ are constants? (December)
Choices
Choice (4) | Response | |
---|---|---|
a. | ||
b. | ||
c. | ||
d. |
Question 3
Appeared in Year: 2016
Question MCQ▾
In random samples of 64 boats out of a total boats, the mean number of defective boats are with a sample standard deviation . The standard error of the mean is (September)
Choices
Choice (4) | Response | |
---|---|---|
a. | ||
b. | ||
c. | ||
d. |
Question 4
Appeared in Year: 2020
Question MCQ▾
Which of the following is a correct statement regarding range as a measure of dispersion?
Choices
Choice (4) | Response | |
---|---|---|
a. | The range is independent of the change of scale but not of the origin | |
b. | The range is not affected by fluctuation of sampling | |
c. | The range is independent of the change of origin but not of the scale | |
d. | The range is independent of the change of origin and scales |