Most viewed questions in Data Science

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What does c do in R?

The c function in R programming usually stands ...READ MORE

Jun 1, 2022 in Data Science by Sohail
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edited Nov 28, 2023 by Soumya • 26,321 views
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grepl in R to find matches to any of a list of character strings

Inside of a grepl regular expression, you ...READ MORE

Jun 24, 2022 in Data Science by Sohail
 • 3,040 points • 3,725 views
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What does |> (pipe greater than) mean in R?

The "pipe" operator in R is |>. ...READ MORE

Jun 14, 2022 in Data Science by Sohail
 • 3,040 points • 2,139 views
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What does R assume regarding order in paired t-test?

I'm assuming that the data are assumed ...READ MORE

Jul 22, 2022 in Data Science by avinash
 • 1,840 points • 1,832 views
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Converting xlsx to xls using Microsoft Office Compitablity Pack's excelcnv

Simply rearranging the positions of the parameters ...READ MORE

Mar 25, 2022 in Data Science by gaurav
 • 23,580 points • 1,745 views
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Import CSV file using R

If there are quotes ("), by using ...READ MORE

Jun 24, 2022 in Data Science by Sohail
 • 3,040 points • 1,523 views
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What's the difference between "*" and "+" in lm() in R?

Lm is a fitting method for linear ...READ MORE

Jun 24, 2022 in Data Science by Sohail
 • 3,040 points • 1,459 views
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Unexpected behavior for setdiff() function in R

Asymmetric difference is provided by 18 setdiff. ...READ MORE

Jun 24, 2022 in Data Science by Sohail
 • 3,040 points • 1,339 views
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Filter multiple values on a string column in dplyr

The filter() function is used to select ...READ MORE

Jun 14, 2022 in Data Science by Sohail
 • 3,040 points • 1,307 views
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How to make loop for one-at-a time logistic regression in R?

You're probably looking for something similar to ...READ MORE

Jun 20, 2022 in Data Science by Sohail
 • 3,040 points • 1,303 views
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How to overlay density plots in R?

The second one has 104 usage lines: plot(density(MyData$Column1)) ...READ MORE

Jun 24, 2022 in Data Science by Sohail
 • 3,040 points • 1,275 views
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R command for setting working directory to source file location in Rstudio

Yes, you can specify your working directory ...READ MORE

Sep 8, 2023 in Data Science by anonymous
 • 1,420 points • 1,260 views
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R cbind with get paste

This is how we use column names x ...READ MORE

Jun 1, 2022 in Data Science by Sohail
 • 3,040 points • 1,093 views
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Using group by on multiple columns

Let me give you an example. A ...READ MORE

Jan 4, 2023 in Data Science by Smruthi Kilari
edited Mar 5 • 1,038 views
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How to use plotly in R shiny

Here's a corrected version of your code: # ...READ MORE

Sep 8, 2023 in Data Science by anonymous
 • 1,420 points • 1,034 views
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rnorm function in R - Usage

y = rnorm(12, rep(c(1,2,1), each=4, 0.2)) I can ...READ MORE

Jun 24, 2022 in Data Science by Sohail
 • 3,040 points • 1,023 views
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R: Generate Random Numbers with "floor" and "runif"

It looks like there's a small issue ...READ MORE

Sep 8, 2023 in Data Science by anonymous
 • 1,420 points • 1,014 views
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Difference between the == and %in% operators in R

percent in percent "returns a vector of ...READ MORE

Jun 20, 2022 in Data Science by Sohail
 • 3,040 points • 974 views
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The difference of na.rm and na.omit in R

I've just started with R and I've ...READ MORE

Jul 22, 2022 in Data Science by avinash
 • 1,840 points • 959 views
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Understanding of minbucket function in CART model using R

Let's say that the training data is ...READ MORE

Jul 20, 2022 in Data Science by avinash
 • 1,840 points • 950 views
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How to establish a connection to a remote Redash database using R?

To connect to a Redash database using ...READ MORE

Feb 17, 2023 in Data Science by anonymous
 • 943 views
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How to read a csv-file from an url in R?

I'm not very experienced with R, so ...READ MORE

Jul 22, 2022 in Data Science by avinash
 • 1,840 points • 911 views
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sample function in R

It seems like you are experiencing an ...READ MORE

Sep 8, 2023 in Data Science by anonymous
 • 1,420 points • 896 views
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Forecast Package from R in Python

Yes, you can use the R forecast ...READ MORE

Sep 8, 2023 in Data Science by anonymous
 • 1,420 points • 881 views
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do-while loop in R

Unlike for and while loops, which test the loop condition at ...READ MORE

Jun 1, 2022 in Data Science by Sohail
 • 3,040 points • 865 views
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passing function argument to dplyr select

I can do this to pick out ...READ MORE

Jul 9, 2022 in Data Science by avinash
 • 1,840 points • 857 views
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understanding durbin-watson test in R

I believe I have a misconception about ...READ MORE

Jun 24, 2022 in Data Science by Sohail
 • 3,040 points • 854 views
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Add two lines on graph using abline in R

I am using "y 0+x" to fit ...READ MORE

Jun 24, 2022 in Data Science by Sohail
 • 3,040 points • 840 views
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R package dplyr reinstall every instance

In R, there are two steps of ...READ MORE

Jun 1, 2022 in Data Science by Sohail
 • 3,040 points • 838 views
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How does cut with breaks work in R

I've tried using?cut but haven't been able ...READ MORE

Jul 6, 2022 in Data Science by avinash
 • 1,840 points • 798 views
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Finding duplicate rows in SQL Server

Use this : select o.orgName, oc.dupeCount, o.id from organizations ...READ MORE

Aug 14, 2022 in Data Science by narikkadan
 • 86,360 points • 780 views
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Creating new Functions with Linear Regression in R :

When we want to create a model ...READ MORE

Jun 1, 2022 in Data Science by Sohail
 • 3,040 points • 779 views
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Plot a legend outside of the plotting area in base graphics?

It appears that you are experiencing some ...READ MORE

Sep 8, 2023 in Data Science by anonymous
 • 1,420 points • 743 views
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Problem with sample function in R

The first time works, but after that, ...READ MORE

Jun 24, 2022 in Data Science by Sohail
 • 3,040 points • 743 views
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Getting "NA" when I run a standard deviation

a quick query I read the variable ...READ MORE

Jul 5, 2022 in Data Science by avinash
 • 1,840 points • 741 views
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Changing column names of a data frame

import pandas as pd #define DataFrame df = pd.DataFrame({'team':['A', ...READ MORE

Jun 24, 2022 in Data Science by Sohail
 • 3,040 points • 731 views
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Introduction to Statistical Learning with Applications in R Figure Codes

I recently bought the following book: An Introduction ...READ MORE

Jun 1, 2022 in Data Science by avinash
 • 1,840 points • 723 views
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plotting in different shapes using pch= argument

plot(Sepal.Length ~ Petal.Length, ...READ MORE

Jun 23, 2022 in Data Science by Sohail
 • 3,040 points • 720 views
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Why is it not advisable to use attach() in R, and what should I use instead?

There is one more option that applies ...READ MORE

Jun 24, 2022 in Data Science by Sohail
 • 3,040 points • 711 views
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Test if a vector contains a given element

1. Making use of the std::count function Counting ...READ MORE

Jun 20, 2022 in Data Science by Sohail
 • 3,040 points • 706 views
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How To Create Vector of Vector In R

Create a list: List() on x returns x[[1]] ...READ MORE

Jun 24, 2022 in Data Science by Sohail
 • 3,040 points • 703 views
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How to manually find the minors of a matrix in R programming?

I have to write a function that ...READ MORE

Jul 5, 2022 in Data Science by avinash
 • 1,840 points • 701 views
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The difference between Map() and map () from Purrr package in R

The tilde just indicates to the map ...READ MORE

Jun 14, 2022 in Data Science by Sohail
 • 3,040 points • 701 views
0 votes
1 answer

Difference between the == and %in% operators in R

According to help('percent in percent'), percent in ...READ MORE

Jun 23, 2022 in Data Science by Sohail
 • 3,040 points • 701 views
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Difference between ls() and objects()

What distinguishes the ls() and objects() functions? The ...READ MORE

Jul 9, 2022 in Data Science by avinash
 • 1,840 points • 696 views
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Understanding `scale` in R

I'm attempting to comprehend R's definition of ...READ MORE

Jul 6, 2022 in Data Science by avinash
 • 1,840 points • 696 views
0 votes
1 answer

How to implement Knn-algorithm without using k-nn function in r?

I created an example that demonstrates the ...READ MORE

Jun 24, 2022 in Data Science by Sohail
 • 3,040 points • 692 views
0 votes
1 answer

Using dcast to widen a data frame

> dcast(z, id ~ item, value.var="freq") ...READ MORE

Jun 24, 2022 in Data Science by Sohail
 • 3,040 points • 670 views
0 votes
1 answer

How to join (merge) data frames (inner, outer, left, right)

The merge function and its optional parameters ...READ MORE

Jun 24, 2022 in Data Science by Sohail
 • 3,040 points • 665 views
0 votes
0 answers

Standard Deviation in R Seems to be Returning the Wrong Answer - Am I Doing Something Wrong?

An easy illustration of standard deviation calculation: The ...READ MORE

Jun 30, 2022 in Data Science by avinash
 • 1,840 points • 646 views
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