Discussion
| List - I | List - II |
|---|---|
| a. Theory of Probability | 1. Single value to represent distribution |
| b. Mean | 2. Uncertain events |
| c. Normal Distribution | 3. Mini replica of population |
| d. Sample | 4. Symmetrical with almost total area with in M(mean) +-30(sig, ma) |
Codes : a b c d
Answer: C
The theory of probability deals with uncertain events (a-2), the mean is a single value that represents a distribution (b-1), the normal distribution is symmetrical with almost the whole area within the mean plus or minus three sigma (c-4), and the sample is a miniature replica of the population (d-3). The code is 2, 1, 4, 3, option (C). Options (A), (B) and (D) pair the theory of probability with a single value or with a symmetrical distribution, and so are wrong.
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