Most viewed questions in Data Science

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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 • 255 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
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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
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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
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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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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
 • 1,180 points • 234 views
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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
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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
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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 • 225 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 • 225 views
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Reasons for using the set.seed function

The requirement is a desire for repeatable ...READ MORE

Jun 20, 2022 in Data Science by Sohail
 • 3,040 points • 221 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
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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
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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
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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 • 198 views
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unique() for more than one variable

df <- data.frame(yad = c("BARBIE", "BARBIE", "BAKUGAN", ...READ MORE

Jun 24, 2022 in Data Science by Sohail
 • 3,040 points • 189 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 • 185 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 • 181 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 • 180 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 • 176 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
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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 • 172 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 • 166 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 • 166 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 • 163 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 • 158 views
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what is intelligent automation ?

Feb 19 in Data Science by Evanjalin
 • 360 points • 63 views
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