Remove multivariate regression
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How Much Should Sponsored Articles Really Cost? [New Data]

Hubspot

A Sponsored Article Pricing Analysis. A multivariable regression analysis showed strong correlations between blog prices and Domain Authority, Facebook Fans, AlexaReach, and PageRank. For PageRank and AlexaRank, use Check Page Rank. What Should Sponsored Articles on Blogs Cost? PR) – 0.000007(AR).