Latest questions in Data Analytics

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How to Use rbind and cbind on Single Dataframe

To obtain the desired output, you can ...READ MORE

Jun 22, 2023 in Data Analytics by anonymous
 • 1,380 points • 1,023 views
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Speed up the loop operation in R

To improve the performance of your code, ...READ MORE

Jun 22, 2023 in Data Analytics by anonymous
 • 1,380 points • 701 views
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Create data frame from function in R

One function that I designed can produce ...READ MORE

Jul 9, 2022 in Data Analytics by avinash
 • 1,840 points • 728 views
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1 answer

All Levels of a Factor in a Model Matrix in R

Yes, you can modify the model.matrix() function ...READ MORE

Jun 22, 2023 in Data Analytics by anonymous
 • 1,380 points • 868 views
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Extracting specific columns from a data frame

Yes, there is a more efficient method ...READ MORE

Jun 22, 2023 in Data Analytics by anonymous
 • 1,380 points • 770 views
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how to use the Box-Cox power transformation in R

Yes, you are on the right track ...READ MORE

Jun 22, 2023 in Data Analytics by anonymous
 • 1,380 points • 1,070 views
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What is the difference between rm() and rm(list=ls())?

Yes, you can clear all variables in ...READ MORE

Jun 22, 2023 in Data Analytics by anonymous
 • 1,380 points • 603 views
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Error: could not find function ... in R

If you encounter an error stating "'some.function' ...READ MORE

Jun 22, 2023 in Data Analytics by anonymous
 • 1,380 points • 590 views
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How can two strings be concatenated?

cbind = tmp ("GAD", "AB") tmp # [,1] ...READ MORE

Jul 5, 2022 in Data Analytics by avinash
 • 1,840 points • 392 views
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Confidence interval calculation in R

When attempting to compute the CI in ...READ MORE

Jul 5, 2022 in Data Analytics by avinash
 • 1,840 points • 430 views
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How can I avoid the transformation into an atomic vector in a matrix (r programming)

I'm scrambling to come up with a ...READ MORE

Jul 5, 2022 in Data Analytics by avinash
 • 1,840 points • 382 views
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Extracting the last n characters from a string in R

See the code below: library(dslabs) data(gapminder) differenceminder percent > percent filter(year% ...READ MORE

Jul 5, 2022 in Data Analytics by avinash
 • 1,840 points • 408 views
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Load csv file in R

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

Jun 30, 2022 in Data Analytics by avinash
 • 1,840 points • 331 views
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Send str() output to View()

A dataset containing 313 variables is the ...READ MORE

Jun 30, 2022 in Data Analytics by avinash
 • 1,840 points • 326 views
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Get row and column indices of matches using `which()`

months and 9 years ago updated ten months ...READ MORE

Jun 27, 2022 in Data Analytics by avinash
 • 1,840 points • 288 views
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Extracting the last n characters from a string in R

The final n characters of a string ...READ MORE

Jun 27, 2022 in Data Analytics by avinash
 • 1,840 points • 519 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 27, 2022 in Data Analytics by avinash
 • 1,840 points • 328 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 27, 2022 in Data Analytics by avinash
 • 1,840 points • 380 views
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R function rep() in Python (replicates elements of a list/vector)

Each element of a vector is duplicated ...READ MORE

Jun 24, 2022 in Data Analytics by Sohail
 • 3,040 points • 1,271 views
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Looping with arima in R

I'm attempting to use the for function ...READ MORE

Jun 24, 2022 in Data Analytics by Sohail
 • 3,040 points • 366 views
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Using One Sample Kolmogorov Smirnov Test in R for in-group Variation/ Distribution

0 In order to compare the voice characteristics ...READ MORE

Jun 24, 2022 in Data Analytics by Sohail
 • 3,040 points • 477 views
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Understanding output of rbind function when a list is passed as argument

While using R to practise fundamental matrices ...READ MORE

Jun 24, 2022 in Data Analytics by Avinash
 • 1,260 points • 419 views
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How can I rbind multiple single-value rows to my data.frame?

0 What follows functions as expected: Data.frame(c(1, 2, 3)) ...READ MORE

Jun 24, 2022 in Data Analytics by Avinash
 • 1,260 points • 518 views
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paste() within another function

I'm not clear why the first function ...READ MORE

Jun 24, 2022 in Data Analytics by Avinash
 • 1,260 points • 323 views
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pass character strings to ggplot2 within a function

In order to streamline my work process, ...READ MORE

Jun 24, 2022 in Data Analytics by Avinash
 • 1,260 points • 511 views
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Is there a quantile function in R that includes both given x and given probs?

I need a R function that computes ...READ MORE

Jun 23, 2022 in Data Analytics by avinash
 • 1,840 points • 305 views
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1 answer

what is diffrence between NROW and nrow in r?

5 In R, you may always check ...READ MORE

Jun 24, 2022 in Data Analytics by Sohail
 • 3,040 points • 1,108 views
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What is meant by "An Object" when we use Str() Function in R

Everyone agrees that str() reveals an object's ...READ MORE

Jun 23, 2022 in Data Analytics by avinash
 • 1,840 points • 354 views
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What's the use of which?

I'm trying to get a handle on ...READ MORE

Jun 23, 2022 in Data Analytics by avinash
 • 1,840 points • 303 views
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1 answer

why the predict() function does have different rows in R

Alter this sentence: model = lm(train$latitude train$crashes) to lm(crashes ...READ MORE

Jun 24, 2022 in Data Analytics by Sohail
 • 3,040 points • 807 views
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1 answer

Text mining- how to build a term-document matrix

You're not loading the TM library, and ...READ MORE

Jun 24, 2022 in Data Analytics by Sohail
 • 3,040 points • 690 views
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1 answer

why the predict() function does have different rows in R

Alter this sentence: model = lm(train$latitude train$crashes) to lm(crashes ...READ MORE

Jun 24, 2022 in Data Analytics by Sohail
 • 3,040 points • 746 views
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1 answer

R numbers from 1 to 100

Your error is seeking for range, which ...READ MORE

Jun 24, 2022 in Data Analytics by Sohail
 • 3,040 points • 1,490 views
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Use of ggplot() within another function in R [closed]

Using the ggplot2 package, I'm attempting to ...READ MORE

Jun 22, 2022 in Data Analytics by avinash
 • 1,840 points
closed Jun 22, 2022 by avinash • 527 views
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1 answer

StepAIC() stopping point

Square RSS Df Sum AIC 169 61.3 ...READ MORE

Jun 24, 2022 in Data Analytics by Sohail
 • 3,040 points • 632 views
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1 answer

What does 'r' mean before a Regex pattern?

Since the string is to be treated ...READ MORE

Jun 24, 2022 in Data Analytics by Sohail
 • 3,040 points • 1,492 views
0 votes
1 answer

Polynomials as functions in R

 this will work _polynomial = function(x) { ...READ MORE

Jun 24, 2022 in Data Analytics by Sohail
 • 3,040 points • 602 views
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1 answer

How do I convert a factor into date format?

That was close. The as needs to ...READ MORE

Jun 24, 2022 in Data Analytics by Sohail
 • 3,040 points • 510 views
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1 answer

How to one hot encode several categorical variables in R

43 I advise employing the caret package's dummyVars ...READ MORE

Jun 24, 2022 in Data Analytics by Sohail
 • 3,040 points • 792 views
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1 answer

Why does tidyverse still require plyr to load?

ggplot2 still imports plyr (at least as ...READ MORE

Jun 24, 2022 in Data Analytics by Sohail
 • 3,040 points • 1,052 views
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1 answer

setwd() in the current working dir

# set the working directory to the ...READ MORE

Jun 24, 2022 in Data Analytics by Sohail
 • 3,040 points • 350 views
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1 answer

How can I make a list of lists in R?

Lists of lists are simple to create. list1 ...READ MORE

Jun 24, 2022 in Data Analytics by Sohail
 • 3,040 points • 541 views
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1 answer

understanding sapply function in r

Do you read 2? sapply. Either a ...READ MORE

Jun 24, 2022 in Data Analytics by Sohail
 • 3,040 points • 546 views
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1 answer

Create line graph with multiple lines in R

You must first restructure your dataset into ...READ MORE

Jun 24, 2022 in Data Analytics by Sohail
 • 3,040 points • 459 views
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1 answer

Vectorized IF statement in R?

x <- seq(0.1,10,0.1) > x [1] ...READ MORE

Jun 24, 2022 in Data Analytics by Sohail
 • 3,040 points • 1,505 views
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0 answers

https://www.edureka.co/community/183864/mean-of-categorical-variables-from-plyr-package

I'm modelling with the fpp2 package's data ...READ MORE

Jun 17, 2022 in Data Analytics by Avinash
 • 1,260 points • 243 views
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1 answer

Mean of categorical variables from plyr package

df<-data.frame(risk= rep(c("ADV","HHM","POV"),10), ...READ MORE

Jun 24, 2022 in Data Analytics by Sohail
 • 3,040 points • 418 views
0 votes
1 answer

What happens when prob argument in sample sums to less/greater than 1?

Excellent query. The documentation is ambiguous on ...READ MORE

Jun 24, 2022 in Data Analytics by Sohail
 • 3,040 points • 539 views
0 votes
1 answer

Why variance in R is different? [duplicate]

There are usually two methods for calculating ...READ MORE

Jun 14, 2022 in Data Analytics by Sohail
 • 3,040 points • 561 views
0 votes
1 answer

if - else if - else statement and brackets

When the first if is followed by ...READ MORE

Jun 14, 2022 in Data Analytics by Sohail
 • 3,040 points • 988 views
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