Most answered questions in Data Science

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How to plot two histograms together in R?

I have two data frames, one each ...READ MORE

Jul 22, 2022 in Data Science by avinash
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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 • 925 views
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Data frames and is.nan()

I was using sum(is.na(my.df)) to check whether ...READ MORE

Jul 22, 2022 in Data Science by avinash
 • 1,840 points • 410 views
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Data frames and is.nan()

Sum(is.na(my.df)) worked as predicted when I used ...READ MORE

Jul 20, 2022 in Data Science by avinash
 • 1,840 points • 456 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 • 901 views
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Can you use a loop to repeat a cbind function?

I have 40 dataframes from two dataframes ...READ MORE

Jul 20, 2022 in Data Science by avinash
 • 1,840 points
edited Mar 4 • 86 views
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What can a data frame do that a tibble cannot?

Tibbles provide a number of benefits over ...READ MORE

Jul 20, 2022 in Data Science by avinash
 • 1,840 points
edited Mar 4 • 91 views
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What can a data frame do that a tibble cannot?

Tibbles provide a number of benefits over ...READ MORE

Jul 20, 2022 in Data Science by avinash
 • 1,840 points
edited Mar 4 • 100 views
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how to use group_by in a function in R

2 1 The following is my code for the ...READ MORE

Jul 20, 2022 in Data Science by avinash
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edited Mar 4 • 93 views
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Dispatch of `rbind` and `cbind` for a `data.frame`

Let's construct a rbind.myclass() function that just ...READ MORE

Jul 20, 2022 in Data Science by avinash
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edited Mar 4 • 83 views
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Dispatch of `rbind` and `cbind` for a `data.frame`

Let's construct a rbind.myclass() function that just ...READ MORE

Jul 20, 2022 in Data Science by avinash
 • 1,840 points
edited Mar 4 • 89 views
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How to properly use the predict function in R

I'll start by giving you some startup ...READ MORE

Jul 20, 2022 in Data Science by avinash
 • 1,840 points
edited Mar 4 • 85 views
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Why does as.character() return an integer on a list of dates?

I was surpirsed to see R do ...READ MORE

Jul 14, 2022 in Data Science by avinash
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edited Mar 4 • 55 views
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How to deal with NaN values in R?

Due of my inexperience with programming and ...READ MORE

Jul 9, 2022 in Data Science by avinash
 • 1,840 points • 529 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 • 672 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 • 808 views
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Frequency table in R

I'm having trouble with something that ought ...READ MORE

Jul 9, 2022 in Data Science by avinash
 • 1,840 points • 519 views
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NA while using strptime function

Version 1.0.136 of R Studio for Windows ...READ MORE

Jul 9, 2022 in Data Science by avinash
 • 1,840 points • 574 views
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Read an Excel file directly from a R script

How do I open an Excel file ...READ MORE

Jul 9, 2022 in Data Science by avinash
 • 1,840 points • 409 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 9, 2022 in Data Science by avinash
 • 1,840 points • 512 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 • 768 views
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Explicitly calling return in a function or not

A while back, Simon Urbanek from the ...READ MORE

Jul 6, 2022 in Data Science by avinash
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edited Mar 4 • 71 views
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Explicitly calling return in a function or not

A while back, Simon Urbanek from the ...READ MORE

Jul 6, 2022 in Data Science by avinash
 • 1,840 points • 547 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 • 665 views
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What is the difference between rm() and rm(list=ls())?

The majority of items I've read. They ...READ MORE

Jul 5, 2022 in Data Science by avinash
 • 1,840 points • 563 views
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Fibonacci Sequence in R

Due of my inexperience with programming and ...READ MORE

Jul 5, 2022 in Data Science by avinash
 • 1,840 points • 528 views
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How do I get a list of built-in data sets in R?

Please advise on how to obtain the ...READ MORE

Jul 5, 2022 in Data Science by avinash
 • 1,840 points • 486 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 • 671 views
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In R, how to get an object's name after it is sent to a function?

I'm trying to find the opposite of ...READ MORE

Jul 5, 2022 in Data Science by avinash
 • 1,840 points • 431 views
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In R, how to get an object's name after it is sent to a function?

I'm trying to find the opposite of ...READ MORE

Jul 5, 2022 in Data Science by avinash
 • 1,840 points
edited Mar 4 • 60 views
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Creating an R dataframe row-by-row

In RStudio, if I execute this code: "1 ...READ MORE

Jul 5, 2022 in Data Science by avinash
 • 1,840 points • 444 views
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R console output only shows most recent command in "if" condition

In RStudio, if I execute this code: "1 ...READ MORE

Jul 5, 2022 in Data Science by avinash
 • 1,840 points • 378 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 • 704 views
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Get row and column indices of matches using `which()`

Say I have some matrix, for example: m ...READ MORE

Jul 5, 2022 in Data Science by avinash
 • 1,840 points • 439 views
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Get row and column indices of matches using `which()`

Say I have some matrix, for example: m ...READ MORE

Jul 5, 2022 in Data Science by avinash
 • 1,840 points
edited Mar 4 • 76 views
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Why 'nrow()' function doesn't seem to work within 'summarise()' function?

See the code below: library(dslabs) \sdata(gapminder) gapminder percent > ...READ MORE

Jun 30, 2022 in Data Science by avinash
 • 1,840 points • 445 views
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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 • 615 views
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Load csv file in R

Is it possible to import a csv ...READ MORE

Jun 27, 2022 in Data Science by avinash
 • 1,840 points • 437 views
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Stepwise AIC using forward selection in R

In R, I'm attempting to perform a ...READ MORE

Jun 24, 2022 in Data Science by Sohail
 • 3,040 points • 551 views
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To speed up the tapply function in R, or another function to convert data frame into a matrix

I must turn a sizable dataset into ...READ MORE

Jun 24, 2022 in Data Science by Sohail
 • 3,040 points • 479 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 • 797 views
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Calculate correlation with cor(), only for numerical columns

I have a dataframe and would like ...READ MORE

Jun 24, 2022 in Data Science by Sohail
 • 3,040 points • 565 views
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Create a sequence of sequences of numbers

The following sequence should be created in ...READ MORE

Jun 24, 2022 in Data Science by Avinash
 • 1,260 points • 516 views
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how to make 2 separate substrings from strsplit in R

When it comes to accessing the elements ...READ MORE

Jun 13, 2022 in Data Science by Avinash
 • 1,260 points • 439 views
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Why I cannot save mutate result in r?

This should be a straightforward question. Within ...READ MORE

Jun 10, 2022 in Data Science by Avinash
 • 1,260 points
edited Mar 4 • 52 views
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Determine the data types of a data frame's columns

I'm using R and have loaded data ...READ MORE

Jun 1, 2022 in Data Science by avinash
 • 1,840 points • 537 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 • 699 views
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How do I prepare different .txt files to analyse and compare the language used in texts ( i.e. sentences and paragraphs) in RStudio?

Hi, I am quite new to using ...READ MORE

May 19, 2022 in Data Science by KARIEN
edited Mar 4 • 147 views
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Hi, I am trying Random Forest on data. when I am fitting "rfr.fit(x_train,y_train)" its giving below error.

ValueError: Expected 2D array, got 1D array ...READ MORE

May 16, 2022 in Data Science by Naresh
edited Mar 4 • 77 views
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Provide solution for this message on jupyter-IndentationError: expected an indented block

please tell me the indentation error  in ...READ MORE

May 15, 2022 in Data Science by Arushi
edited Mar 4 • 152 views
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