Archive for the ‘Research’ Category

A Study of Subnet/ IP Link Ratios

This short blog is in response to a recent support ticket querying whether particular domains display significant differences in terms of the ratio of referring subnets to referring IP addresses. We were asked what a “normal” value of this ratio could be. A statistical study was performed on the Majestic Million data. We found that…


MajesticSEO Beginners Guide to Correlation: Part 3

In Parts 1 and 2, we have looked at the definitions of correlation, population and sample size. In this part, we will go through the essentials of the mathematics involved.  Before we can proceed any further, however, we have to define certain fundamental statistical concepts. Statistical Measures of a Data Set In this section, it…


Identifying a Bad Backlink Profile

(This is a guest post by Barrie Smith. His observations and insights are his own.) I have recently been keeping a tab on Google page 1 results for “Payday Loans” – a search term historically showing results of websites ranking having used spammy, dodgy and/or underhand link building techniques. Even in the year 2013 –…


MajesticSEO Beginners Guide to Correlation: Part 2

In Part 1, we looked at how correlation can be  used to examine relations or associations between variables in a data set. We described the different types of correlations, and presented the advantages and disadvantages of the correlation technique to analyse data. This part will attempt to ease the reader into methods of quantifying correlation.…


A Million here… A Million there…

Updated on 19th April ’13 – See footnote IP counts and Subnet counts are no measure of link database superiority As the market leader in Internet Mapping and link metrics for data analysts and on-line marketers, we are used to walking on a tightrope when it comes to comparing ourselves with… Continue reading