Match the items of List-I with the items of List-II and indicate the option of correct matching: List-I List-II a. Contingency coefficient for any size of contingency table 1. $$\sqrt {\frac{{N - n}}{{N - 1}}} $$ b. Statistical approach to decide size of a sample 2. $$\frac{{{\sigma _p}}}{{\sqrt n }}$$ c. Finite population multiplier 3. $$\sqrt {\frac{{{x^2}}}{{{x^2} + n}}} $$ d. Standard error of mean 4. $$\frac{{{Z^2}.\sigma _p^2}}{{{e^2}}}$$

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