Latest questions in Data Analytics

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Different types of seasonality in time series modelling

Seasonality in time series occurs when the ...READ MORE

Aug 9, 2018 in Data Analytics by DataKing99
 • 8,240 points • 2,266 views
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1 answer

Difference between Bayesian Estimate and Maximum Likelihood Estimation

In the Bayesian estimate, we have some ...READ MORE

Aug 9, 2018 in Data Analytics by DataKing99
 • 8,240 points • 2,008 views
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2 answers

What will be first step to be a data scientist?

Your first steps towards becoming a top ...READ MORE

Aug 9, 2018 in Data Analytics by zombie
 • 3,790 points • 661 views
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1 answer

Does gradient descent methods always converge to same point?

No, they always don't. That's because in ...READ MORE

Aug 7, 2018 in Data Analytics by CodingByHeart77
 • 3,740 points • 2,338 views
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2 answers

Significance of P-value in statistical data

Refer the following points explaining the significance ...READ MORE

Aug 10, 2018 in Data Analytics by Atul
 • 180 points • 1,123 views
0 votes
1 answer

How to pass command line arguments to run a Rscript

1. For taking an argument from the ...READ MORE

Aug 6, 2018 in Data Analytics by Anmol
 • 1,780 points • 7,731 views
0 votes
1 answer

Commands used to store R objects in a file

Use the command  save (x, file=”x.Rdata”) READ MORE

Aug 4, 2018 in Data Analytics by Sahiti
 • 6,370 points • 1,362 views
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2 answers

Sorting algorithms available in R

R basically supports two different types of ...READ MORE

Aug 17, 2018 in Data Analytics by zombie
 • 3,790 points • 4,325 views
0 votes
1 answer

What is data science?

Data Science is the practice of: Asking questions (formulating hypothesis), ...READ MORE

Aug 3, 2018 in Data Analytics by Abhi
 • 3,720 points • 663 views
+1 vote
2 answers

What is the difference between LDA and PCA for dimensionality reduction?

Principal Component Analysis (PCA) is an unsupervised ...READ MORE

Mar 7, 2019 in Data Analytics by Seema
 • 140 points • 14,339 views
+1 vote
1 answer

How do I perform feature selection in a disease prediction data set?

Feature selection is based equally upon logic ...READ MORE

Aug 20, 2018 in Data Analytics by Abhi
 • 3,720 points • 655 views
0 votes
1 answer

What is the difference between random forest and decision trees?

The basic difference is that Random Forest ...READ MORE

Jul 30, 2018 in Data Analytics by Abhi
 • 3,720 points • 1,889 views
+1 vote
3 answers

Number of missing values in dataset

Try this, lapply(airquality, function(x) { sum(is.na(x)) }) READ MORE

Aug 7, 2019 in Data Analytics by anonymous
 • 3,870 views
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1 answer

Check Distribution of Categorical Variable in R

Consider the iris dataset use the table() function ...READ MORE

Jul 30, 2018 in Data Analytics by CodingByHeart77
 • 3,740 points • 8,062 views
0 votes
1 answer

Data Imputation Packages

These are some packages in R which ...READ MORE

Jul 28, 2018 in Data Analytics by Sahiti
 • 6,370 points • 406 views
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1 answer

Load CSV File in R

Loading a .csv file in R is ...READ MORE

Jul 28, 2018 in Data Analytics by Sahiti
 • 6,370 points • 848 views
0 votes
1 answer

How do I become a data scientist step by step?

I am assuming that you are a ...READ MORE

Jul 26, 2018 in Data Analytics by Abhi
 • 3,720 points • 559 views
0 votes
2 answers

Why should anyone learn Python instead of R for machine learning?

Machine learning is the latest technology everyone ...READ MORE

Apr 13, 2019 in Data Analytics by SA
 • 1,090 points • 737 views
0 votes
1 answer

Mean of one column with respect to another

Consider the inbuilt iris dataset in R. Use ...READ MORE

Jul 25, 2018 in Data Analytics by CodingByHeart77
 • 3,740 points • 1,659 views
0 votes
1 answer

Steps to evaluate Linear Regression in R

 These are sequential steps which need to ...READ MORE

Jul 25, 2018 in Data Analytics by CodingByHeart77
 • 3,740 points • 965 views
0 votes
1 answer

Would time taken to train n-random forest be equal to n x (decision trees)

No, the time to train the random ...READ MORE

Aug 7, 2018 in Data Analytics by Abhi
 • 3,720 points • 362 views
+1 vote
2 answers

What is the difference between correlation and covariance?

Correlation and Co-variance both are used as ...READ MORE

Jul 24, 2018 in Data Analytics by Abhi
 • 3,720 points • 3,753 views
0 votes
1 answer

On a given dataset would time taken to train n - random forest be equal to time taken to train n X (Decision tree)

No, the time to train the random ...READ MORE

Jul 24, 2018 in Data Analytics by Abhi
 • 3,720 points • 1,053 views
0 votes
1 answer

Components in grammar of graphics

Broadly speaking these are different components in grammar of ...READ MORE

Jul 24, 2018 in Data Analytics by Sahiti
 • 6,370 points • 561 views
+1 vote
2 answers

Different data structures in R

The different data types in R are ...READ MORE

Aug 26, 2019 in Data Analytics by anonymous
 • 33,030 points • 1,204 views
0 votes
2 answers

How does data cleaning play a vital role in data analysis

Data is the core you do your ...READ MORE

Jul 24, 2018 in Data Analytics by Abhi
 • 3,720 points • 4,983 views
+1 vote
1 answer

Difference between validation set and a test set

Validation set can be considered as a part ...READ MORE

Jul 24, 2018 in Data Analytics by CodingByHeart77
 • 3,740 points • 1,043 views
+1 vote
1 answer

How to handle Nominal Data?

Nominal data is basically data which can ...READ MORE

Jul 24, 2018 in Data Analytics by Abhi
 • 3,720 points • 485 views
+2 votes
2 answers

How to handle outliers

There are multiple ways to handle outliers ...READ MORE

Jul 24, 2018 in Data Analytics by Abhi
 • 3,720 points • 731 views
0 votes
1 answer

Turn values into scientific notation in R

Consider the below vector: a<-c(0.1324,0.0001234,234.21341324,09.324324) You can convert it ...READ MORE

Jul 19, 2018 in Data Analytics by DataKing99
 • 8,240 points • 11,386 views
0 votes
1 answer

Join multiple strings in R

Joining strings in R is quite an ...READ MORE

Jul 19, 2018 in Data Analytics by DataKing99
 • 8,240 points • 1,328 views
0 votes
2 answers

Recommender Systems

hello, i have one project which is based ...READ MORE

Mar 30, 2019 in Data Analytics by JAY SHAH
 • 1,293 views
0 votes
1 answer

Logistic Regression Example

Logistic Regression often referred to as the ...READ MORE

Jul 19, 2018 in Data Analytics by CodingByHeart77
 • 3,740 points • 1,230 views
0 votes
2 answers

PCA model in R

Principal component analysis (PCA) is routinely employed on ...READ MORE

Jul 19, 2018 in Data Analytics by zombie
 • 3,790 points • 1,004 views
0 votes
1 answer

Multiple plots onto a single page in R

Plotting multiple plots onto a single page ...READ MORE

Jul 17, 2018 in Data Analytics by Sahiti
 • 6,370 points • 439 views
0 votes
1 answer

Cross Validation

Cross-validation is a model validation technique for ...READ MORE

Jul 17, 2018 in Data Analytics by CodingByHeart77
 • 3,740 points • 453 views
0 votes
1 answer

Difference between Eigenvectors and Eigenvalues

Eigenvectors are used for understanding linear transformations. In data ...READ MORE

Jul 17, 2018 in Data Analytics by CodingByHeart77
 • 3,740 points • 9,293 views
0 votes
1 answer

Univariate/ Bivariate/ Multivariate

Univariate: These analyses are descriptive statistical analysis techniques which ...READ MORE

Jul 13, 2018 in Data Analytics by CodingByHeart77
 • 3,740 points • 2,358 views
0 votes
1 answer

Statistical Power of Sensitivity

Sensitivity is commonly used to validate the ...READ MORE

Jul 13, 2018 in Data Analytics by CodingByHeart77
 • 3,740 points • 790 views
0 votes
1 answer

Treat outliers in Dataset

Outlier values can be identified by using ...READ MORE

Jul 12, 2018 in Data Analytics by Sahiti
 • 6,370 points • 592 views
0 votes
1 answer

How to treat missing values during analysis?

The extent of the missing values is ...READ MORE

Jul 12, 2018 in Data Analytics by Sahiti
 • 6,370 points • 801 views
0 votes
1 answer

Overfitting vs Underfitting

In statistics and machine learning, one of ...READ MORE

Jul 11, 2018 in Data Analytics by CodingByHeart77
 • 3,740 points • 955 views
0 votes
1 answer

Selection Bias

Selection bias is the bias introduced by the ...READ MORE

Jul 11, 2018 in Data Analytics by CodingByHeart77
 • 3,740 points • 747 views
0 votes
1 answer

White noise model in R

The white noise (WN) model is a ...READ MORE

Jul 10, 2018 in Data Analytics by Sahiti
 • 6,370 points • 811 views
0 votes
1 answer

Random Walk model in R

A random walk is a simple example ...READ MORE

Jul 10, 2018 in Data Analytics by Sahiti
 • 6,370 points • 774 views
0 votes
2 answers

Apply function in R

apply Description: “Returns a vector or array or ...READ MORE

Jul 10, 2018 in Data Analytics by zombie
 • 3,790 points • 770 views
0 votes
2 answers

Clustering in R

Clustering is a type of unsupervised learning ...READ MORE

Jul 9, 2018 in Data Analytics by zombie
 • 3,790 points • 665 views
0 votes
1 answer

Rattle packages in R

Rattle is a popular GUI for data mining ...READ MORE

Jul 6, 2018 in Data Analytics by CodingByHeart77
 • 3,740 points • 616 views
0 votes
1 answer

How to build a Scatter-plot using plotly?

With the help of “plotly” we can ...READ MORE

Jul 6, 2018 in Data Analytics by CodingByHeart77
 • 3,740 points • 1,441 views
0 votes
1 answer

How to create a new R6 Class in R?

You have to first create an object ...READ MORE

Jul 5, 2018 in Data Analytics by DataKing99
 • 8,240 points • 1,068 views
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