Match the List-I with List-II
| List-I | List-II | ||
| Term | Definition | ||
| (A) | Confidence level | (I) | In a confidence interval, the range of values, above and below the sample statistic. |
| (B) | Margin of error | (II) | It is the probability of making Type-I error, when null hypothesis is true as an equality. |
| (C) | Level of significance | (III) | It involves the use of sample data to calculate a single value of an unknown population parameter. |
| (D) | Point estimation | (IV) | It describes the uncertainty of a sampling method. |
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → (A) - (IV), (B) - (I), (C) - (II), (D) - (III)
(A) Confidence level
This matches (IV) It describes the uncertainty of a sampling method.
A confidence level (for example 95%) states how often intervals built by the sampling method would contain the true parameter, so it measures the uncertainty of that method.
(B) Margin of error
This matches (I) In a confidence interval, the range of values, above and below the sample statistic.
A confidence interval is written as sample statistic ± margin of error.
(C) Level of significance
This matches (II) It is the probability of making Type-I error, when null hypothesis is true as an equality.
The level of significance α is the probability of rejecting the null hypothesis when it is true.
(D) Point estimation
This matches (III) It involves the use of sample data to calculate a single value of an unknown population parameter.
A point estimate is a single value, such as the sample mean used for the population mean.
So the matching is (A)-(IV), (B)-(I), (C)-(II), (D)-(III).