निम्नलिखित में से किसे गैर-यादृच्छिक (गैर-प्रायिकता) प्रतिचयन विधि के रूप में वर्गीकृत किया गया है?

Tippett's Table refers to which of the following?

In a cluster sampling design, 8 clusters are selected at random, and each cluster contains exactly 200 units. What is the total sample size of the study?

Which of the following points represents a DISADVANTAGE or limitation of Simple Random Sampling? (i) Highly difficult and cumbersome to implement on a large scale. (ii) Minimizes and reduces selection bias. (iii) Random sampling error is still possible. (iv) Straightforward to design and execute at a low cost.