Getting a random sample from your pandas data frame

Working with Python's pandas library for data analytics? If your data set is very large, you might sometimes want to work with a random subset of it. The "sample" method is perfect for that. In this video, I demonstrate the ways in which you can use the "sample" method on your data frames to get back precisely the number (or fraction) of rows you want.

[madhurakhaire]

Very useful for my Masters data science dissertation as I'm working with tremendously large dataset, thanks a lot!!!

[alaaeltayeb]

very helpful thank you so much, your teaching skills are fantastic and smooth

[biglicha]

Thanks! It was very usefull for My homework.

[oueslatinihel]

mister thank you for this explanation it was very helpful but i need to ask if i have a csv file and i want to utilise exactly 1/4 of the dataset to train my model and i dont want it to be random what should i do !!! thank youu

[nadjagomes]

Thank you for sharing your knowledge! Is there a way of choose randomly just one variable from an specific column?

[AJAYVAIDSstudent]

“In this world, no one teaches random sampling as clearly as you.”

[ImBatmanYT_CODM]

Hello there, I had few doubts related to random sample generation (having some sampling logic(10%) which covers the every unique user in the given data set), where I could assign the generated samples further to 'n' users! I know what I'm asking here is quite basics, but I couldn't find anything relatable over lot. Can you kindly help? (This is basically for generating audit sampling from a CSV file)

[kartik]

How does your file location autocompletes after using ~ before courses?

[spaceadvanture]

Does the sample represents the actual population, i mean if I train model using sample data set will it be also correct for actual population

Is it good practice to train model on samples?

[atifdai]

I am using the yearly data....Suppose my data is showing 33 rows and 20 columns (20 columns also including the years (1999 to 2022) in my summary stat analysis. How can I exclude the year's column from my whole analysis? OR I should delete the year's column. Please guide us further regarding any data shape command.

[avibis]

Thank you for the information sir. But how to exclude variables less than or equal to zero (different kind of sample)?

[l]

Is there any way to proof that python random sampling is indeed random? From statistical perspective

[ahmadjaradat]

Very helpful thank you so much, your teaching skills are fantastic and smooth