A common approach is to produce a box plot that looks at the median and the upper and lower quartiles:
"" width="378" height="251"Unfortunately, these data are affected by outliers, i.e. the boxes within the boxes and the scatter plot looks flat. After removing the outliers, here is what it looks like:"" width="388" height="250"
Zooming in, we see that the ratios are more tightly distributed and the box plot should be a flat line. There still seems to be a lot of noise. We can look at the ratios in different ways to get an idea of where most of the data lies.
90% ratio 1.28
95% ratio 1.51
99% ratio 1.99
The vast majority of domains in our dataset have less italy mobile database than 2 backlinks per URL.
This doesn’t mean that seeing multiple links pointing to the same URL on the web is wrong. The data suggests that the practice of multiple links appears to be relatively uncommon.
Having determined the lowest value and reasonable limits to illustrate the box plot, we can now expand the orange bars from the two plots above to illustrate the lower quartile, median, and upper quartile of the dataset.
Why can a page link to the same page multiple times?
This research shows that multiple links to a resource are uncommon, but not unheard of. We provide several examples of when it is appropriate to provide multiple links to the same citing URL.