Stattrek.com Statistics and Probability

Free tutorials cover AP statistics, probability, survey sampling, regression, ANOVA, and matrix algebra. Written and video lessons. Online calculators...

Stattrek.com Overview

out of 100 (desktop) and 30 out of 100 (mobile). This indicates a need for improvement in terms of page loading speed.

Structural Overview of Stattrek.com

Stattrek.com is a website that provides free tutorials on statistics, probability, and matrix algebra. The website has a strong emphasis on AP statistics and is targeted towards students and professionals who want to learn more about these topics. The website provides both written and video-based tutorials and online calculators to help users apply their knowledge.

The website is hosted by Amazon.com, Inc., a leading web hosting company. This ensures that the website is reliable and secure. The website has a .COM top-level domain, which is a commonly used extension for commercial websites. The website has also been issued an SSL certificate by Let's Encrypt, which means that the website is secure and user data is protected.

Stattrek.com is a family-friendly website that provides educational resources for users of all ages. The tutorials are presented in a clear and concise manner, making it easy for users to understand the material. The website also has a section for AP statistics, which is a popular subject for high school students.

In terms of website performance, PageSpeed Insights scores indicate that there is room for improvement. The website scores 64 out of 100 on desktop and 30 out of 100 on mobile. This suggests that the website could perform better in terms of page loading speed.

Overall, Stattrek.com is a valuable resource for anyone interested in statistics, probability, and matrix algebra. The website provides high-quality tutorials and online calculators, making it easy for users to apply their knowledge. The website is also secure and family-friendly, ensuring that users can learn in a safe environment. While there is room for improvement in terms of website performance, the content and resources provided by Stattrek.com make it a great resource for anyone looking to expand their knowledge in these subjects.

Stattrek.com Rank Summary

Global Rank

40,247

Average Load Time

3.69sec

Links In Count

819

Website Value

$298,138

Audience Geography. Where are stattrek.com visitors located?

Country	Visitors
United States US	47.6%
India IN	11.8%
Australia AU	5.2%
China CN	4.9%
United Kingdom GB	3.2%
Canada CA	2.7%
Philippines PH	2.2%
South Africa ZA	1.5%
Pakistan PK	1.4%
Other	19.3%

Country	Pageviews
United States US	45.6%
India IN	13.3%
Australia AU	5.9%
China CN	4.1%
United Kingdom GB	2.9%
Canada CA	2.6%
Philippines PH	2.1%
South Africa ZA	1.8%
Pakistan PK	1.6%
Other	20.1%

Country	Rank
Ethiopia ET	4920
Philippines PH	5517
Australia AU	6984
South Africa ZA	10633
Nigeria NG	10719
United States US	11366
Pakistan PK	13119
India IN	13467
Singapore SG	14347
Malaysia MY	14403
Norway NO	16444
Sweden SE	17033

Where do visitors go on stattrek.com?

Subdomain	Pageviews
stattrek.com	100%

Subdomain	Pageviews per User
stattrek.com	1.2

Subdomain	Reach
stattrek.com	100%

How popular is stattrek.com?

Period	Global Rank	Global Rank Delta
past 3 months	40247	13300
past month	33517	-10114
past week	27213	-1626
yesterday	30256	4248

Days	Pageviews Rank	Pageviews Rank Delta	Pageviews per Million	Pageviews per Million Delta	Pageviews per User	Pageviews per User Delta
90	70259	23703	84	-38.49%	1.3	-2.33%
30	61006	-15491	1	29%	1.2	-4.8%
7	51525	-2570	12	6%	1.1	-1.72%
1	53484	2834	12	-4.892%	1.3	10%

Days	Reach Rank	Reach Rank Delta	Reach per Million	Reach per Million Delta
90	32060	10620	247	-37.42%
30	25884	-8665	31	36%
7	20677	-1305	40	8%
1	24485	4469	36	-14.04%

Stattrek.com Website Safety

Overview

Last Updated: 12/26/2024

Overall result - stattrek.com is safe.

We gather website safety and reputation data and compare it with available third-party sources so we calculate own safety and trustworthiness rate based on information that we get.

Norton Connect Safe

Last Updated: 03/21/2024

stattrek.com is safe.

Norton ConnectSafe evaluates stattrek.com for any unsafe and insecure content. The results are critical for families with young children.

Google Safe Search

Last Updated: 02/08/2019

stattrek.com is safe.

SafeSearch is used as a parental control tool to filter out any inappropriate for your children search results on your devices: phones, tablets or personal computers.

Google Safe Browsing

Last Updated: 01/09/2019

stattrek.com is safe.
Malware: not found.
Phishing: not detected.
Unwanted software: not found.
Harmfull applications: not found.

Google Safe Browsing notifies when websites are compromised by malicious actors. These protections work across Google products and provide a safer online experience.

Site Advisor

Last Updated: 02/22/2021

stattrek.com is safe.

McAfee assesses stattrek.com for a meaningful set of security threats. Featured dangers from annoying pop-ups to hidden Trojans, that can steal your identity, will be revealed. McAfee does not analyze stattrek.com for mature or inappropriate content, only security checks are evaluated.

Web of Trust

Last Updated: 01/09/2019

stattrek.com child safety is very good.

The WOT calculates reputation of the stattrek.com. This reputation system receives ratings from users and information from third-party sources, assesses the stattrek.com for safety features and confirms, whether stattrek.com is suitable for children.

SSL Information

SSL Checker Tool

Domain	stattrek.com
Issuer Organization	Let's Encrypt
Issuer	E5
Algorithm	ecdsa-with-SHA384
Valid form	09/18/2024
Expiration	12/17/2024
Signed	Certificate is not self signed
Additional Domains	*.stattrek.com stattrek.com

Stattrek.com Rank History

Alexa Rank shows how popular stattrek.com is in comparison with other sites. The most popular site has Alexa Rank equals 1. If stattrek.com has Alexa Rank equals 100,000, then it is in TOP 100,000 popular sites in the world. The rank is calculated using a combination of average daily visitors to stattrek.com and pageviews on stattrek.com over the past 3 months.

Stattrek.com Hosting Information

Server Location

Geolocation Tool

ASN Information

ASN Lookup Tool

ASN ID: 16509

ASN Title: AMAZON-02 - Amazon.com, Inc., US

Last Update: 07/16/2024

#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/whois_tou.html
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/whois_reporting/index.html
#
# Copyright 1997-2018, American Registry for Internet Numbers, Ltd.
#

ASNumber: 16509
ASName: AMAZON-02
ASHandle: AS16509
RegDate: 2000-05-03
Updated: 2012-03-02
Ref: https://rdap.arin.net/registry/autnum/16509

OrgName: Amazon.com, Inc.
OrgId: AMAZON-4
Address: 1918 8th Ave
City: SEATTLE
StateProv: WA
PostalCode: 98101-1244
Country: US
RegDate: 1995-01-23
Updated: 2017-01-28
Ref: https://rdap.arin.net/registry/entity/AMAZON-4

OrgAbuseHandle: AEA8-ARIN
OrgAbuseName: Amazon EC2 Abuse
OrgAbusePhone: +1-206-266-4064
OrgAbuseEmail: abuse@amazonaws.com
OrgAbuseRef: https://rdap.arin.net/registry/entity/AEA8-ARIN

OrgTechHandle: ANO24-ARIN
OrgTechName: Amazon EC2 Network Operations
OrgTechPhone: +1-206-266-4064
OrgTechEmail: amzn-noc-contact@amazon.com
OrgTechRef: https://rdap.arin.net/registry/entity/ANO24-ARIN

RTechHandle: AC6-ORG-ARIN
RTechName: Amazon-com Incorporated
RTechPhone: +1-206-266-2187
RTechEmail: ipmanagement@amazon.com
RTechRef: https://rdap.arin.net/registry/entity/AC6-ORG-ARIN

#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/whois_tou.html
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/whois_reporting/index.html
#
# Copyright 1997-2018, American Registry for Internet Numbers, Ltd.
#

Stattrek.com Domain Registration and Settings

WHOIS

WHOIS Lookup Tool

Domain Name: STATTREK.COM
Registry Domain ID: 123092177_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.godaddy.com
Registrar URL: http://www.godaddy.com
Updated Date: 2023-07-19T12:58:19Z
Creation Date: 2004-06-21T21:19:59Z
Registry Expiry Date: 2029-06-21T21:19:59Z
Registrar: GoDaddy.com, LLC
Registrar IANA ID: 146
Registrar Abuse Contact Email: abuse@godaddy.com
Registrar Abuse Contact Phone: 480-624-2505
Domain Status: clientDeleteProhibited https://icann.org/epp#clientDeleteProhibited
Domain Status: clientRenewProhibited https://icann.org/epp#clientRenewProhibited
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Domain Status: clientUpdateProhibited https://icann.org/epp#clientUpdateProhibited
Name Server: BIRD.EZOICNS.COM
Name Server: FISH.EZOICNS.COM
Name Server: FROG.EZOICNS.COM
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2024-09-11T00:57:42Z

DNS Records

DNS Lookup Tool

Host	A Record	TTL
stattrek.com	13.37.187.223	60

Host	MX Record	Priority	TTL
stattrek.com	mail.stattrek.com	10	300

Host	NS Record	TTL
stattrek.com	bird.ezoicns.com	172800
stattrek.com	fish.ezoicns.com	172800
stattrek.com	frog.ezoicns.com	172800
stattrek.com	ibis.ezoicns.com	172800

Host	TXT Record	TTL
stattrek.com	v=spf1 +a +mx +a:nifty-perlman.66-45-231-26.plesk.page -all	14400
stattrek.com	v=spf1 a mx include:_spf.site4now.net ?all	14400
stattrek.com	v=spf1 a mx ~all	14400

bird.ezoicns.com
TTL: 900
Email address: awsdns-hostmaster.amazon.com
Serial: 1
Refresh: 7200
Retry: 900
Expire: 1209600
Minimum: 86400

Stattrek.com HTML Check

HTML Validation Tool

Warnings

The “banner” role is unnecessary for element “header”.

The “navigation” role is unnecessary for element “nav”.

The first occurrence of ID “BannerAdWrapper” was here.

The “name” attribute is obsolete. Consider putting an “id” attribute on the nearest container instead.

The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.

A table row was 2 columns wide, which is less than the column count established by the first row (3).

This document appears to be written in English. Consider adding “lang="en"” (or variant) to the “html” start tag.

Consider using the “h1” element as a top-level heading only (all “h1” elements are treated as top-level headings by many screen readers and other tools).

Errors

Bad value “sub1” for attribute “rel” on element “a”: The string “sub1” is not a registered keyword.

Bad value “sub2” for attribute “rel” on element “a”: The string “sub2” is not a registered keyword.

Bad value “sub3” for attribute “rel” on element “a”: The string “sub3” is not a registered keyword.

Bad value “sub4” for attribute “rel” on element “a”: The string “sub4” is not a registered keyword.

Bad value “sub5” for attribute “rel” on element “a”: The string “sub5” is not a registered keyword.

Bad value “sub6” for attribute “rel” on element “a”: The string “sub6” is not a registered keyword.

Bad value “sub7” for attribute “rel” on element “a”: The string “sub7” is not a registered keyword.

Bad value “sub8” for attribute “rel” on element “a”: The string “sub8” is not a registered keyword.

Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)

Duplicate ID “BannerAdWrapper”.

Bad value “none” for attribute “border” on element “img”: Only “0” is a permitted zero literal.

An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.

Stray end tag “font”.

Bad value “navigation” for attribute “role” on element “ul”.

Stattrek.com Desktop Performance

Last tested: 01/10/2018

Desktop Speed

67%

Reduce server response time

Leverage browser caching

Eliminate render-blocking JavaScript and CSS in above-the-fold content

Minify CSS

Minify JavaScript

Optimize images

Minify HTML

Desktop Resource Breakdown

Total Resources	98
Number of Hosts	22
Static Resources	61
JavaScript Resources	28
CSS Resources	22

Stattrek.com Mobile Insights

Last tested: 01/04/2018

Mobile Usability

100%

Mobile Speed

64%

Reduce server response time

Eliminate render-blocking JavaScript and CSS in above-the-fold content

Optimize images

Leverage browser caching

Minify HTML

Minify JavaScript

Mobile Resource Breakdown

Total Resources	53
Number of Hosts	14
Static Resources	27
JavaScript Resources	16
CSS Resources	2

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Stattrek.com Statistics and Probability

Free tutorials cover AP statistics, probability, survey sampling, regression, ANOVA, and matrix algebra. Written and video lessons. Online calculators...

Stattrek.com Overview

Stattrek.com Rank Summary

Stattrek.com Website Safety

Stattrek.com Rank History

Stattrek.com Hosting Information

Stattrek.com Domain Registration and Settings

Stattrek.com HTML Check

Stattrek.com Desktop Performance

Stattrek.com Mobile Insights

Stattrek.com Similar Audits

Stattrek.com Common Typos