How to use random.sample() method

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by vigneshchennai74 dot icon Updated: Oct 11, 2023

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The random.sample() function is a valuable tool in Python's standard library. It helps facilitate the random sample generation from a given population or sequence. 

This function has been a part of Python since its early versions. It helps contribute to the language's versatility in statistical analysis and data manipulation.  

random.sample() operates in the realm of statistical sampling. It allows for various types of sampling, including:  

  • Simple Random Sampling: This method selects a random subset from a population. We will choose the element that has an equal probability.  
  • Stratified Sampling: We can divide the population into strata in this type. Er can apply the random.sample() to each stratum, ensuring proportional representation.  
  • Systematic Sampling: It involves selecting every 'k-th' element from a sequence. It provides an efficient way to get a representative sample.  

We cannot overstate the significance of random.sample() in data science. It forms the basis for generating unbiased, representative subsets. They are crucial in statistical analysis and hypothesis testing. With reliable sampling techniques, drawing valid conclusions from data becomes easier.  

  • Data Analysis: random.sample() aids in creating valid random samples for data analysis. It helps ensure that results are representative of the entire dataset.  
  • Hypothesis Testing: Researchers use it to select samples for experimentation. It helps ensure that the findings are not skewed by biased selection.  
  • Understand Your Data: Before using this, you should understand the dataset, population, or sequence. This knowledge is crucial for making informed sampling decisions. 
  • Sample Size: Determine the appropriate sample size based on your analysis requirements. A larger sample size generally leads to more reliable results. 
  • Reproducibility: Use a fixed random seed value when working on projects. You must be reproducible to ensure consistent results.  

In conclusion, random.sample() is a powerful Python function. It helps in various fields are extensive. It's capacity to work with fair and agent. This examination makes information examination, exploration, and quality control imperative. This function ensures that the samples taken from a population are valid. You should also check that it can help make better decisions and insights.  

random.sample() remains a key device for extricating significant data from datasets. It is an invaluable asset for any programmer or analyst due to its versatility. We can improve the analyses' quality and validity using a random.sample().  

Preview of the output that you will get on running this code from your IDE


random.sample is a function in the Python random module that selects a specified number of unique elements from a given sequence without replacement.

  1. Download and install VS Code on your desktop.
  2. Open VS Code and create a new file in the editor.
  3. Copy the code snippet that you want to run, using the "Copy" button or by selecting the text and using the copy command (Ctrl+C on Windows/Linux or Cmd+C on Mac).,
  4. Paste the code into your file in VS Code, and save the file with a meaningful name and the appropriate file extension for Python use (.py).file extension.
  5. To run the code, open the file in VS Code and click the "Run" button in the top menu, or use the keyboard shortcut Ctrl+Alt+N (on Windows and Linux) or Cmd+Alt+N (on Mac). The output of your code will appear in the VS Code output console.
  6. Paste the code into your file in VS Code.
  7. Save the file with a meaningful name and the appropriate file extension for Python use (.py).
  8. Delete the code from the 4th line to the 5th line.
  9. Add result and = in the starting of the 2nd line as like this result = sample([1, 20, 3], 2)
  10. Add print(result) in the last line.
  11. Run the Code

I hope you have found this useful. I have added the version information in the following section.

I found this code snippet by searching "Python random.sample() " in Kandi. you can try any use case.

Environment Tested

I tested this solution in the following versions. Be mindful of changes when working with other versions.

  1. The solution is created and tested using Vscode 1.77.2 version
  2. The solution is created in Python 3.7.15 version

This code helps by randomly picking a specified number of distinct items from a given list, which is useful for tasks like random sampling or generating random subsets of data. This process also facilitates an easy-to-use, hassle-free method to create a hands-on working version of code which would help us how to use random.sample()method in Python.


What is random.sample(), and how does it work?   

random.sample() is a Python function. It helps create random, non-repetitive subsets from a given population or sequence. It works by selecting unique elements with equal probability. 


How can I create a subset of generated integers using random.sample()?   

You can generate a subset of random integers by supplying a population. You can also specify the desired sample size as arguments to a random.sample().  

How do I know if the samples are valid random samples?  

We consider the samples obtained at random.sample() as valid random samples. We have a chance to include each element equally, ensuring representativeness.  

What is Simple random sampling, and how does it compare to other types of sampling?  

Simple random sampling is an essential sampling method. It is where there is an equal probability to choose each element in a population. It is straightforward, differing from stratified and systematic sampling methods. 


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