Which of the following statements about the circular test is correct?
A. Fisher's ideal index satisfies it.
B. It requires that P₀₁ × P₁₀ = 1.
C. It is also known as the time reversal test.
D. The circular test is satisfied if P₀₁ × P₁₂ × P₂₀ = 1.
Answer: Option D
Solution (By JKSSB Mock Tests)
Circular test checks consistency over multiple periods: the product of indices from 0 to 1, 1 to 2, and 2 back to 0 should equal 1. Time reversal is P₀₁×P₁₀=1.
If the probability of a student passing an exam is 0.8 and the probability of another student passing is 0.7, and these events are independent, the probability that at least one passes is:
In the context of primary data collection, which of the following statements is/are true? 1. Schedule is filled by the enumerator. 2. Questionnaire is self-administered. 3. Schedule requires literate respondents. Select the correct answer:
Explanation:
Schedule is filled by enumerator, so respondents need not be literate; questionnaire is filled by the respondent. Statement 3 is false because schedule does not require literate respondents.
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