Disadvantage of Simple Random Sampling

Not Always Feasible: It can be impractical for very large populations due to time and resource constraints in listing and accessing every member.

Population List Required: A complete and accurate list of the population is needed, which can be difficult to obtain.

Potential for Sampling Error: Random selection might still result in an unrepresentative sample, especially with small sample sizes.

Resource Intensive: It may require significant resources and effort to ensure true randomness and to contact selected individuals.

Difficulty in Subgroup Analysis: It may not adequately capture smaller subgroups within the population, making it challenging to analyze these subgroups separately.

Random Sampling Method

Random Sampling is a method of probability sampling where a researcher randomly chooses a subset of individuals from a larger population. In this method, every individual has the same probability of being selected. The researcher aims to collect data from as large a portion as possible of this randomly chosen subset.

In the field of statistics, sampling serves as the technique for selecting a portion of the population to draw statistical inferences. This subset’s characteristics allow us to estimate the attributes of the entire population. In the realm of market research, sampling methods fall into two primary categories: Random or probability sampling and non-probability sampling.

This article discusses the specific category of probability sampling known as random sampling and its types, formulas, advantages, examples, etc.

Table of Content

  • What is Random Sampling?
    • Random Sampling Definition
  • Types of Random Sampling
    • Simple Random Sampling
    • Systematic Random Sampling
    • Stratified Random Sampling
    • Cluster Random Sampling
  • How to Perform Simple Random Sampling
  • When to Use Random Sampling
  • Random Sampling Formula
  • Advantages of Simple Random Sampling
  • Disadvantage of Simple Random Sampling
  • Random Sampling vs Non-Probability Sampling
  • Random Sampling Examples
  • Practice Questions on Random Sampling

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What is Random Sampling?

Random sampling is a method used in statistics to select a subset of individuals or items from a larger population in such a way that each member of the population has an equal and independent chance of being included in the sample. It is a fundamental technique for conducting surveys and experiments....

Types of Random Sampling

Random sampling relies on a method that involves a degree of random selection. It allows all eligible individuals an equal opportunity to be part of the sample drawn from the entire sample space. While it can be laborious and costly, probability sampling is a powerful tool for creating a representative sample of the population. There are four main categories of this sampling technique, which include:...

How to Perform Simple Random Sampling

Define the Population: Clearly identify the entire group from which you want to draw a sample....

When to Use Random Sampling

When the population is relatively homogenous: Simple random sampling works well when the population shares similar characteristics, as each individual has an equal chance of being selected. When the population size is known: If the total population size is known, simple random sampling ensures that every individual has a known and non-zero chance of being included in the sample. When there is no need for specialized knowledge: Simple random sampling is straightforward to implement and does not require extensive prior information about the population. When statistical inference is the primary goal: Simple random sampling is often used when researchers need to make generalizations about the population based on the sample data, as it provides an unbiased estimate of population parameters. When resources are limited: Simple random sampling can be more cost-effective and less time-consuming compared to other sampling methods, making it suitable when resources are limited....

Random Sampling Formula

Formula of random sampling is mentioned as below:...

Advantages of Simple Random Sampling

Below are the advantages of Simple Random Sampling:...

Disadvantage of Simple Random Sampling

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Random Sampling vs Non-Probability Sampling

Below are the differences between Probability Sampling vs Non-Probability Sampling:...

Random Sampling Examples

Example 1: A company has 500 products, and they want to randomly select 20 of them for quality testing. What is the probability of any single product getting selected?...

Practice Questions on Random Sampling

Question 1: You’re conducting a survey about favourite ice cream flavours in a town with 5,000 residents. How can you perform simple random sampling for your study?...

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