Trending questions in Data Analytics

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Using dcast to widen a data frame

I've got the following data set: data.frame(z, z, ...READ MORE

Jun 20, 2022 in Data Analytics by Avinash
 • 1,260 points
edited Mar 4 • 252 views
0 votes
0 answers

How to create a data summary function?

I'm trying to create a function that ...READ MORE

Jun 9, 2022 in Data Analytics by Avinash
 • 1,260 points • 691 views
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0 answers

Using dcast to widen a data frame

I've got the following data set: data.frame(z, z, ...READ MORE

Jun 20, 2022 in Data Analytics by Avinash
 • 1,260 points
edited Mar 4 • 225 views
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How to generate correlation plot of my data.frame in R?

I have a df and I want ...READ MORE

Jun 9, 2022 in Data Analytics by Avinash
 • 1,260 points • 606 views
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How do I change the data type of this column?

Hi, I have two columns in a ...READ MORE

Jun 12, 2022 in Data Analytics by Ahmad
edited Mar 4 • 232 views
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How to identify which columns are not "NA" per row in a matrix?

I have a matrix of 12 rows ...READ MORE

Jun 10, 2022 in Data Analytics by Avinash
 • 1,260 points
edited Mar 4 • 298 views
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What does na.rm=TRUE actually means?

Whenever we have NA in our data, ...READ MORE

Jun 9, 2022 in Data Analytics by Avinash
 • 1,260 points
edited Mar 4 • 291 views
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0 answers

How to find the statistical mode?

Mean() and median() are common R functions ...READ MORE

Jun 10, 2022 in Data Analytics by Avinash
 • 1,260 points
edited Mar 4 • 247 views
0 votes
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How to identify which columns are not "NA" per row in a matrix?

I have a matrix of 12 rows ...READ MORE

Jun 10, 2022 in Data Analytics by Avinash
 • 1,260 points
edited Mar 4 • 227 views
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How to print the head (first 10 rows) with only select variables in R

In order to print out the first ...READ MORE

Jun 9, 2022 in Data Analytics by Avinash
 • 1,260 points
edited Mar 4 • 233 views
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How does mean parameter in rnorm function works

I was wanting to know how does ...READ MORE

Jun 2, 2022 in Data Analytics by avinash
 • 1,840 points
edited Mar 4 • 239 views
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Data science

So, there is no doubt that both ...READ MORE

May 19, 2022 in Data Analytics by Pravalika
edited Mar 4 • 285 views
+1 vote
3 answers

How to change the value of a variable using R programming in a data frame?

Try this: df$symbol <- as.character(df$symbol) df$symbol[df$sym ...READ MORE

Jan 11, 2019 in Data Analytics by Tyrion anex
 • 8,700 points • 36,955 views
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1 answer

What is set.seed() in R?

Let me explain in simple words, set seed ...READ MORE

Jul 9, 2019 in Data Analytics by anonymous
 • 33,050 points • 43,709 views
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what could be a sql query for :

what could be a sql query for ...READ MORE

Mar 21, 2022 in Data Analytics by anonymous
edited Mar 4 • 219 views
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How to start step by step learning of data analyst. What to start first R or Sql or Paython or tableau?

I don't have any previous knowledge of ...READ MORE

Jan 23, 2022 in Data Analytics by anonymous
edited Mar 4 • 255 views
+1 vote
2 answers

How to replace a value in a data frame based on a conditional 'If' statement?

It's easier to convert alpha to characters ...READ MORE

Jun 6, 2018 in Data Analytics by Sahiti
 • 6,370 points • 37,410 views
0 votes
0 answers

How do I create a new variable using multiple data frames in R?

I am trying to create a new ...READ MORE

Jan 17, 2022 in Data Analytics by anonymous
edited Mar 4 • 264 views
0 votes
0 answers

Data Science Training in Mumbai

I want the best institute regarding Data ...READ MORE

Oct 4, 2021 in Data Analytics by richamalhotra
 • 100 points
edited Mar 4 • 219 views
0 votes
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Which of the following is true of running a Spark application on Hadoop YARN?

Q12.Which of the following is true of ...READ MORE

Aug 27, 2021 in Data Analytics by Vipul
edited Mar 4 • 270 views
0 votes
3 answers

2) Which of the following are applicable to Bigdata technologies(Select all applicable)

Replication, transaction processing READ MORE

Nov 25, 2021 in Data Analytics by anonymous
 • 3,931 views
0 votes
0 answers

Which of the below command used to remove a broadcast variable, "bvar", from memory?

Q1.Which of the below command used to ...READ MORE

Aug 27, 2021 in Data Analytics by Vipul
edited Mar 4 • 250 views
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0 answers

Hey Guys I really wants to learn and be Business analyst, I don't have funds to pay for

Hey Guys I really wants to learn ...READ MORE

Aug 26, 2021 in Data Analytics by Parambir
edited Mar 4 • 278 views
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0 answers

Python : Key error on comments, Provided the error in more information - Please help

KeyError ...READ MORE

Jul 24, 2021 in Data Analytics by Ramesh
edited Mar 4 • 233 views
0 votes
1 answer

7) What does "Dual platform architecture" mean?

Setup a new Bigdata setup for complete ...READ MORE

Sep 18, 2021 in Data Analytics by anonymous
edited Mar 5 • 3,880 views
0 votes
1 answer

Error in library(randomForest) : there is no package called ‘randomForest’

Hi@akhtar, You need to install the library in ...READ MORE

Oct 6, 2020 in Data Analytics by MD
 • 95,460 points • 12,148 views
+1 vote
2 answers

How can I drop columns by name in a data frame ?

We can Drop Columns by name in ...READ MORE

Apr 14, 2018 in Data Analytics by zombie
 • 3,790 points • 29,278 views
+3 votes
2 answers

Error: could not find function - R Programming

Yes, Just like @Maverik said, It happens ...READ MORE

Aug 23, 2019 in Data Analytics by anonymous
 • 33,050 points • 35,122 views
0 votes
0 answers

missing value where TRUE/FALSE needed

Hello, I have the following error: Error in while ...READ MORE

Jun 6, 2021 in Data Analytics by Anri
edited Mar 4 • 260 views
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0 answers

Unable to delete First Column showing "not found in axis" even after I added axis=1 and inplace= True

sheet1.drop('Questions', axis=1, inplace=True) READ MORE

Jun 2, 2021 in Data Analytics by Bhushan
edited Mar 4 • 257 views
0 votes
0 answers

replacing the missing value of a vector with the mean value of that vector

how to replacing the missing value of a ...READ MORE

May 29, 2021 in Data Analytics by Rizky
edited Mar 4 • 241 views
0 votes
0 answers

R: How to use lapply properly?

Hi folks, I have a question concerning the ...READ MORE

May 21, 2021 in Data Analytics by amelieeeee
edited Mar 4 • 263 views
0 votes
0 answers

R programming error missing value where TRUE FALSE needed

My code tfr<-function(x) {return (x[1]^2 + x[2]^2 ...READ MORE

May 20, 2021 in Data Analytics by Kaktus
edited Mar 4 • 250 views
0 votes
1 answer

13) The two data sources that telecom operators can leverage for Analytics are __________

A Network and Source data READ MORE

Jun 21, 2021 in Data Analytics by anonymous
edited Mar 5 • 2,731 views
0 votes
2 answers

What are the differences between overfitting and underfitting?

Overfitting is a modeling error which occurs when ...READ MORE

Aug 8, 2019 in Data Analytics by anonymous
 • 35,451 views
0 votes
1 answer

How can I print to stdout in R?

Hi@akhtar, Sometimes we need to print to stdout ...READ MORE

Oct 30, 2020 in Data Analytics by MD
 • 95,460 points • 8,323 views
0 votes
1 answer

Check palindrome or not in R

library(stringi) palindrome<-function(x) {   if(string_re ...READ MORE

Jan 14, 2022 in Data Analytics by Eshita Saha
edited Mar 5 • 7,898 views
0 votes
0 answers

How to plot frequency of Y/N data against age ranges in R.

I have a set of data with ...READ MORE

Apr 27, 2021 in Data Analytics by MrStickyRice
edited Mar 4 • 230 views
0 votes
3 answers

How to select rows in a range from dataframe?

This should do it integer_location = np.where(df.index == ...READ MORE

Dec 16, 2020 in Data Analytics by Roshni
 • 10,440 points • 15,912 views
0 votes
1 answer

17) Identifying customers likely to churn is part of __________

d) Churn Management READ MORE

Jun 8, 2021 in Data Analytics by anonymous
edited Mar 5 • 1,798 views
0 votes
0 answers

In which sector do you want to apply data mining? Why? How can you improve that section by applying data mining?

In which sector do you want to ...READ MORE

Apr 13, 2021 in Data Analytics by anonymous
edited Mar 4 • 205 views
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0 answers

Can Artificial Intelligence be a threat to us? Justify your answer. If yes, how can we avoid that threat?

Can AI be a threat to us? ...READ MORE

Apr 13, 2021 in Data Analytics by anonymous
edited Mar 4 • 203 views
0 votes
1 answer

Change the order of multiple legends in ggplot

Hi Radha, You can change the order of ...READ MORE

Jul 24, 2019 in Data Analytics by Cherukuri
 • 33,050 points • 27,157 views
0 votes
0 answers

Best career courses related to Oracle

Hi, I have 9 years of experience ...READ MORE

Apr 5, 2021 in Data Analytics by Poorna
edited Mar 4 • 212 views
0 votes
1 answer

How to check if a element is present in the list?

There are multiple functions for this purpose ...READ MORE

Oct 29, 2019 in Data Analytics by Cherukuri
 • 33,050 points • 22,668 views
0 votes
1 answer

Error in library(plyr) : there is no package called ‘plyr’

Hi@akhtar, You need to install this library in ...READ MORE

Sep 7, 2020 in Data Analytics by MD
 • 95,460 points • 8,380 views
0 votes
1 answer

Error in library(plotrix) : there is no package called ‘plotrix’

Hi@akhtar, You can use the install command at ...READ MORE

Oct 28, 2020 in Data Analytics by MD
 • 95,460 points • 5,571 views
0 votes
1 answer

9) Subscriber Data analysis includes __________ (select all applicable)

Option d)  Subscriber profiling, upselling and innovative tariffs Master ...READ MORE

Dec 2, 2020 in Data Analytics by Gitika
 • 65,730 points • 4,007 views
0 votes
1 answer

How to remove an element from a list in R?

Hi@akhtar, You can remove a value from a ...READ MORE

Oct 30, 2020 in Data Analytics by MD
 • 95,460 points • 5,253 views
0 votes
0 answers

Why my interpolated map created in R is not similar to the one created with Surfer?

I would like to map rainfall data. ...READ MORE

Feb 17, 2021 in Data Analytics by anonymous
edited Mar 4 • 253 views
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