r-tutor.com Domain Owner Whois and Analysis

DOMAIN OWNER WHOIS

ⓘ The owner has chosen to keep his whois contact information private.

• Contact Name

Whois Agent (224812243)

• Organization

Whois Privacy Protection Service, Inc.

• Address

PO Box 639, C/O r-tutor.com

• City

Kirkland

• Zip Code

98083

• State

• Country Code

• Phone Number

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• Email

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• Domain Registrar

ENOM, INC.
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SEO SCORE

r-tutor.com
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✅ 10 criteria passed
❌ 1 criteria to solve

PERFORMANCE OPPORTUNITIES

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OVERVIEW

• Domain Owner

Private

• Category

Technology & Computing

• Online since

July 14, 2009 Explore Wayback Machine

• Age

15 years, 3 months, 23 days

• Alexa Rank

#89.922, r-tutor.com is in the world's top 100.000 websites!

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TECHNICAL SEO & SECURITY

❌ SSL Certificate

This website is not SSL secured (HTTPS), the certificate issued by Let's Encrypt has expired on February 13, 2020.

✅ Title Tag

An R Introduction to Statistics | R Tutorial
Length: 44 (recommended: 10 to 70)

✅ Meta Description

An R introduction to statistics that explains basic R concepts and illustrates with statistics textbook homework exercises.
Length: 123 (recommended: 50 to 160)

ⓘ Google preview

Desktop Version

An R Introduction to Statistics | R Tutorial

https://r-tutor.com

An R introduction to statistics that explains basic R concepts and illustrates with statistics textbook homework exercises.

Mobile Version

https://r-tutor.com

An R Introduction to Statistics | R Tutorial

An R introduction to statistics that explains basic R concepts and illustrates with statistics textbook homework exercises.

✅ Encoding

Great, language/character encoding is specified: utf-8

❌ URL Resolve

No 301 redirects are in place to redirect traffic to your preferred domain. Pages that load successfully both with and without www. are treated as duplicate content! Not all versions of your page point to the same URL.

URL	Resolved URL
http://r-tutor.com	http://www.r-tutor.com/
https://r-tutor.com	http://www.r-tutor.com/
http://www.r-tutor.com	http://www.r-tutor.com/
https://www.r-tutor.com	https://www.r-tutor.com/

✅ Robots.txt

http://www.r-tutor.com/robots.txt

✅ URL Parameters

Great, the domain URLs look clean.

Attribute	Value
ⓘ copyright	Copyright (C) 2009 - 2014 Chi Yau. All Rights Reserved.
ⓘ revisit-after	5 days

SEMANTIC ANALYSIS

ⓘ The owner has associated the following topics to the website.

ⓘ The results of our semantic analysis are shown below using the website's language.

They are the main concepts covered by r-tutor.com.

Each concept has a confidence score. The higher it is, the more important the topic is relative to the page.

Topics

Introduction to Statistics (Community) Confidence: 71%

"Introduction to Statistics" is the seventh episode of the first season of the American comedy television series Community, airing on NBC on October 29, 2009. Annie (Alison Brie) hosts a Dia de los Muertos party, the success of which depends on Jeff (Joel McHale) attending. At the party, Pierce gets high, causing trouble for the other characters. Jeff pursues their statistics professor, Professor Michelle Slater (Lauren Stamile). Finally, Shirley (Yvette Nicole Brown) is distressed due to her ex-husband's behavior.

Textbook Confidence: 69%

A textbook or coursebook (UK English) is a manual of instruction in any branch of study. Textbooks are produced according to the demands of educational institutions. Schoolbooks are textbooks and other books used in schools. Although most textbooks aren't only published in printed format, many are now available as online electronic books.

Homework Confidence: 66%

WEBSITE SPEED

✅ r-tutor.com website speed is fast. Page speed is important for visitors and search engines.

Get insights to improve your page loading time.

Page Loading Time

0.9s

This domain loads at the median speed of 0.9 seconds.

Speed Percentile

82%

r-tutor.com is faster than approximately 82 percent of the web. Your website page speed needs to be as fast as you can make it, without compromising the customer experience.

A good goal to achieve is a loading time of 2 seconds on desktop and mobile devices.

PAGESPEED INSIGHTS

Page on which speed is tested live:

Chrome User Experience Report Results

Lighthouse Results

TRAFFIC

ⓘ This website is ranked #89.922 by Alexa.

This rank is traffic based. The lower the rank is, the better the domain is ranked.

Daily visitors by country

India (7.8%)
United States of America (39.3%)
Australia (6.4%)
Greece (4.3%)
Canada (6.9%)
Others (35.3%)

Traffic country ranks

Country	Rank
India	#112.951
Bangladesh	#37.472
United States of America	#60.744
Australia	#26.489
Greece	#14.569
Canada	#40.401

LAYOUT

ⓘ Doctype HTML 4.01

ⓘ Responsive website, mobile-friendly.

Mobile Rendering

This website doesn't seem to be optimized for Mobile Visitors.

Phone
How r-tutor.com looks like on a mobile device such as an iPhone.

Tablet
How r-tutor.com looks like on a tablet such as an iPad.

Main colors used

ⓘ These are the main HTML color codes used by this website.

47% #ffffff
16% #f0f0f0
16% #000020
6% #fffff0
5% #000000
2% #000010
1% #fff0f0
1% #100040
1% #102070
1% #f0fff0
1% #504090
1% #f0f0ff

Text/code ratio

ⓘ r-tutor.com's text/code ratio is 17.74%. It's a bit low. Consider raising it by adding more text content of value for your visitors, or keeping your code clean.

Text / Code Ratio 17.74%

A good text to HTML ratio is anywhere from 25 to 70%.

This percentage refers to the visible text ratio, as opposed to HTML elements, image tags and other non-visible information.

Main HTML tags

✅ Headings

Great, we found headings on this page.

<H1> 7
<H2> 6
<H3> 0
<H4> 0
<H5> 0
<H6> 0

<H1>

Top level heading
Deep learning in r
Hierarchical linear model
Bayesian classification with gaussian process
Bayesian ınference using openbugs
Significance test for kendall's tau-b
Support vector machine with gpu, part ıı
Hierarchical cluster analysis

<H2>

2^nd level heading
An r ıntroduction to statistics
R tutorial ebook
R tutorials
Recent articles
Quotes
Subscribe rss

✅ Alt attributes

We found 9 images on this website.
Great, 0 ALT attributes are missing on your image tags.

LINKS

ⓘ There is a total of 177 links on the homepage of this website.

ⓘ Internal links : 175

For a better readability, only the first 50 internal links are shown below.

Anchor	Type	URL
R Tutorial	text	/
About	text	/content/about
Contact	text	/content/contact-us
Resources	text	/content/resources
Terms of Use	text	/content/terms-use
Home	text	/
Download	text	/content/download
Sales	text	/content/sales
eBook	text	/content/r-tutorial-ebook
Site Map	text	/sitemap
Deep Learning in R	text	/deep-learning/introduction
	image	/deep-learning/introduction
Read more	text	/deep-learning/introduction
Hierarchical Linear Model	text	/gpu-computing/rbayes/rhierlmc
	image	/gpu-computing/rbayes/rhierlmc
Linear regression	text	/elementary-statistics/multiple-linear-regression
Read more	text	/gpu-computing/rbayes/rhierlmc
Bayesian Classification with Gaussian Process	text	/gpu-computing/gaussian-process/rvbm
	image	/gpu-computing/gaussian-process/rvbm
support vector machine	text	/gpu-computing/svm/rpusvm-1
Read more	text	/gpu-computing/gaussian-process/rvbm
Bayesian Inference Using OpenBUGS	text	/bayesian-statistics/openbugs
	image	/bayesian-statistics/openbugs
Read more	text	/bayesian-statistics/openbugs
Significance Test for Kendall's Tau-b	text	/gpu-computing/correlation/kendall-tau-b
	image	/gpu-computing/correlation/kendall-tau-b
Kendall correlation coefficient	text	/gpu-computing/correlation/kendall-rank-coefficient
Read more	text	/gpu-computing/correlation/kendall-tau-b
Support Vector Machine with GPU, Part II	text	/gpu-computing/svm/rpusvm-2
	image	/gpu-computing/svm/rpusvm-2
last tutorial	text	/gpu-computing/svm/rpusvm-1
RPUSVM	text	/content/download
Read more	text	/gpu-computing/svm/rpusvm-2
Hierarchical Cluster Analysis	text	/gpu-computing/clustering/hierarchical-cluster-analysis
	image	/gpu-computing/clustering/hierarchical-cluster-analysis
distance matrix	text	/node/144
mtcars	text	/node/10
Read more	text	/gpu-computing/clustering/hierarchical-cluster-analysis
R Tutorial eBook	text	/content/r-tutorial-ebook
	image	/content/r-tutorial-ebook
R Introduction	text	/r-introduction
Basic Data Types	text	/r-introduction/basic-data-types
Numeric	text	/r-introduction/basic-data-types/numeric
Integer	text	/r-introduction/basic-data-types/integer
Complex	text	/r-introduction/basic-data-types/complex
Logical	text	/r-introduction/basic-data-types/logical
Character	text	/r-introduction/basic-data-types/character
Vector	text	/r-introduction/vector
Combining Vectors	text	/r-introduction/vector/combining-vectors
Vector Arithmetics	text	/r-introduction/vector/vector-arithmetics

ⓘ External links : 2

Anchor	Type	URL
styleshout	text	http://www.styleshout.com
zyzstar	text	http://zyzstar.kosoru.com?fractals

DOMAIN REGISTRAR

ⓘ Domain Registrar	ENOM, INC.
ⓘ Registration Date	07/14/2009 15 years, 3 months, 23 days ago
ⓘ Last Modified	07/08/2019 5 years, 4 months ago
ⓘ Expiration Date	07/14/2020 Expired