Statistical average has significance due to following sequence.
1. To present huge mass of data ina summarised form.
2. To facilitate comparison of different sets of data.
3. To help decision-making.
Select the correct answer using the options given below

A. The central limit theorem B. The law of statistical regularly C. The law of inertia of large numbers D. None of the above

A. Sampling error B. Measurement error C. Coverage error D. Non-response error

A. Both (A) and (R) are true B. (A) is true, but (R) is false C. (A) is false, but (R) is true D. Both (A) and (R) are false

A. 0 B. 1 C. 0.4 D. 0.8