निम्नलिखित में से किसे संभाव्यता प्रतिचयन (probability sampling) विधियों के रूप में वर्गीकृत किया गया है? i. सुविधाजनक प्रतिचयन (Convenience Sampling) ii. सरल यादृच्छिक प्रतिचयन (Simple Random Sampling) iii. व्यवस्थित यादृच्छिक प्रतिचयन (Systematic Random Sampling) iv. स्तरीकृत यादृच्छिक प्रतिचयन (Stratified Random Sampling) v. कोटा प्रतिचयन (Quota Sampling)

Which of the following sampling methods is a non-probability sampling method?

In what ways is random sampling helpful in research?

Match the sampling techniques in List-I with their descriptions in List-II and choose the correct answer: List-I: a) Quota Sampling b) Purposive Sampling c) Snowball Sampling d) Convenience Sampling List-II: i. Selection of existing participants who recruit future subjects from among their acquaintances ii. Selection of participants based on easy accessibility and availability iii. Selection of participants based on specific characteristics and purpose by the researcher iv. Dividing the population into strata and filling non-probability categories based on specified proportions