Question

Why the random method of collecting pebbles might be considered unreliable

Answer 1

Random sampling is a sampling technique wherein each sample has an equal probability

• Explanation: Random sampling is one of the simplest ways to gather data from the local population. However, random sampling has few drawbacks.  
• Only a random survey will provide a complete account of the total population analysed in a precise statistical study of a large population.  
• If the vast populations do not have a comprehensive list, individuals who want to make random observations will have to collect / collect information from other sources. If freely available, smaller subset lists may be used to replicate a complete list of larger populations; however, it takes time.  
• Although random samples are used as an empirical analysis tool, errors in sampling may be detected. If a broad sample population is not fully representative, the entire population composition is biased and additional sampling techniques are needed

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Discuss two merits and two demerits of random sampling - Brainly.in

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