Recent questions tagged data-science

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How to know the type of an object?

Sep 20, 2018 in Data Analytics by Anmol
 • 1,780 points • 712 views
+1 vote
3 answers

What is logistic regression?

Sep 7, 2018 in Data Analytics by Anmol
 • 1,780 points • 1,998 views
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1 answer

How to evaluate a soft Voting classifier being trained on some data

Sep 6, 2018 in Python by bug_seeker
 • 15,510 points • 1,173 views
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3 answers

What is Linear Regression?

Sep 5, 2018 in Data Analytics by Anmol
 • 1,780 points • 1,557 views
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What is nominal data and how to deal with it?

Aug 29, 2018 in Data Analytics by Anmol
 • 1,780 points • 1,709 views
+1 vote
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%>% What are these symbols/characters used for in R?

Aug 28, 2018 in Data Analytics by Anmol
 • 1,780 points • 1,323 views
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1 answer

Tokenizing text file generates error using word tokenize_words

Aug 28, 2018 in Data Analytics by Anmol
 • 1,780 points • 2,597 views
+1 vote
2 answers

What is an RDBMS? Name some examples for RDBMS? What is CRUD?

Aug 24, 2018 in Data Analytics by Anmol
 • 1,780 points • 27,916 views
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2 answers

How do you build a custom function in Python?

Aug 24, 2018 in Data Analytics by Anmol
 • 1,780 points • 1,416 views
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Which package is used to do data import in R and Python and How do you import SAS data?

Aug 24, 2018 in Data Analytics by Anmol
 • 1,780 points • 924 views
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What is data science? How would you say it is similar or different to business analytics and business intelligence?

Aug 24, 2018 in Data Analytics by Anmol
 • 1,780 points • 779 views
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What is the importance of having a selection bias?

Aug 24, 2018 in Data Analytics by Anmol
 • 1,780 points • 869 views
+1 vote
2 answers

avoid producing a eps-graphic with 2 pages by mixing traditional and grid graphics

Aug 23, 2018 in Data Analytics by terasi
 • 170 points • 929 views
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1 answer

How do you know which whether to apply supervised learning or unsupervised learning on a dataset

Aug 21, 2018 in Data Analytics by Anmol
 • 1,780 points • 829 views
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How will you define the number of clusters in a clustering algorithm?

Aug 21, 2018 in Data Analytics by Anmol
 • 1,780 points • 2,052 views
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1 answer

Python or R – Which one would you prefer for text analytics?

Aug 20, 2018 in Data Analytics by Anmol
 • 1,780 points • 4,572 views
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2 answers

What are the differences between overfitting and underfitting?

Aug 20, 2018 in Data Analytics by Anmol
 • 1,780 points • 34,614 views
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1 answer

What do you understand by statistical power of sensitivity and how do you calculate it?

Aug 20, 2018 in Data Analytics by Anmol
 • 1,780 points • 1,132 views
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3 answers

What is the goal of A/B Testing?

Aug 20, 2018 in Data Analytics by Anmol
 • 1,780 points • 3,139 views
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1 answer

What is Selection Bias?

Aug 20, 2018 in Data Analytics by Anmol
 • 1,780 points • 4,018 views
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1 answer

What are the important skills to have in Python with regard to data analysis?

Aug 20, 2018 in Data Analytics by Anmol
 • 1,780 points • 4,557 views
+1 vote
4 answers

Python vs. R for data science

Aug 10, 2018 in Data Analytics by Omkar
 • 69,220 points • 2,181 views
0 votes
1 answer

How can I perform word stemming in R

Aug 10, 2018 in Data Analytics by Anmol
 • 1,780 points • 4,537 views
+1 vote
2 answers

How can I get experience in Data Science as a fresher?

Aug 9, 2018 in Data Analytics by Anmol
 • 1,780 points • 884 views
+1 vote
1 answer

How good at SQL does a data scientist really need to be?

Aug 9, 2018 in Data Analytics by Anmol
 • 1,780 points • 636 views
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1 answer

Can a data scientist do everything a data analyst can do?

Aug 9, 2018 in Data Analytics by Anmol
 • 1,780 points • 633 views
+10 votes
3 answers

Which is a better initiative to learn data science: Python or R?

Aug 9, 2018 in Data Analytics by Anmol
 • 1,780 points • 1,627 views
0 votes
1 answer

Different types of seasonality in time series modelling

Aug 9, 2018 in Data Analytics by CodingByHeart77
 • 3,750 points • 2,533 views
0 votes
1 answer

Difference between Bayesian Estimate and Maximum Likelihood Estimation

Aug 9, 2018 in Data Analytics by CodingByHeart77
 • 3,750 points • 2,322 views
0 votes
2 answers

What will be first step to be a data scientist?

Aug 7, 2018 in Data Analytics by Anmol
 • 1,780 points • 1,027 views
0 votes
1 answer

Does gradient descent methods always converge to same point?

Aug 7, 2018 in Data Analytics by Sahiti
 • 6,370 points • 2,589 views
0 votes
2 answers

Significance of P-value in statistical data

Aug 7, 2018 in Data Analytics by Sahiti
 • 6,370 points • 1,473 views
0 votes
1 answer

What is data science?

Aug 3, 2018 in Data Analytics by Anmol
 • 1,780 points • 878 views
+1 vote
2 answers

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

Aug 3, 2018 in Data Analytics by Anmol
 • 1,780 points • 14,711 views
+1 vote
1 answer

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

Jul 30, 2018 in Data Analytics by Anmol
 • 1,780 points • 844 views
0 votes
1 answer

What is the difference between random forest and decision trees?

Jul 30, 2018 in Data Analytics by Anmol
 • 1,780 points • 2,155 views
0 votes
1 answer

How do I become a data scientist step by step?

Jul 26, 2018 in Data Analytics by Anmol
 • 1,780 points • 768 views
0 votes
1 answer

Steps to evaluate Linear Regression in R

Jul 25, 2018 in Data Analytics by Sahiti
 • 6,370 points • 1,217 views
+1 vote
2 answers

What is the difference between correlation and covariance?

Jul 24, 2018 in Data Analytics by Anmol
 • 1,780 points • 4,078 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)

Jul 24, 2018 in Data Analytics by Anmol
 • 1,780 points • 1,285 views
+1 vote
1 answer

Difference between validation set and a test set

Jul 24, 2018 in Data Analytics by DataKing99
 • 8,250 points • 1,352 views
0 votes
1 answer

Logistic Regression Example

Jul 19, 2018 in Data Analytics by Sahiti
 • 6,370 points • 1,486 views
0 votes
1 answer

Difference between Eigenvectors and Eigenvalues

Jul 17, 2018 in Data Analytics by Sahiti
 • 6,370 points • 9,875 views
0 votes
1 answer

Constructing a new data.frame by giving values row by row - R

Jun 4, 2018 in Data Analytics by zombie
 • 3,790 points • 482 views
0 votes
1 answer

Python equivalent to replace function in R

May 31, 2018 in Data Analytics by nirvana
 • 3,130 points • 1,391 views
0 votes
1 answer

Converting a pandas data-frame to a dictionary

May 23, 2018 in Data Analytics by zombie
 • 3,790 points • 4,577 views
0 votes
2 answers

Replacing a row in pandas data.frame

May 23, 2018 in Data Analytics by DeepCoder786
 • 1,720 points • 13,743 views
0 votes
1 answer

Changing Pandas data-frame to JSON type

May 22, 2018 in Data Analytics by DataKing99
 • 8,250 points • 1,886 views
0 votes
1 answer

Applying the same function to every row of a data.frame - R

May 22, 2018 in Data Analytics by DeepCoder786
 • 1,720 points • 1,695 views
0 votes
1 answer

Selecting only p-value and r.squared value from linear regression result

May 22, 2018 in Data Analytics by BHARANI
 • 420 points • 1,404 views
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