The average improvement for each metric is determined by comparing customers' performance in month 4-12 post-purchase to the average set in the first three months after purchasing Marketing Hub and Sales Hub.

The exception is marketing leads in which customer performance in the 12 months post-purchase is compared to the average of the first month post-purchase.

The basis for each Marketing Hub and Sales Hub metric are as follows:

Marketing leads - total volume of form submissions.
Deals closed - the total number of deals marked as “closed-won” in HubSpot CRM.
Deal close rate - the total number of deals marked as “closed-won” divided by the number of deals created in HubSpot CRM

We believe it is critically important to ensure the average improvement values used in this calculator reflect the experience of our customers as accurately as possible. Therefore, before analyzing customer’s data, we screen the data to check for errors, missing data and data distribution. We also employ statistical techniques to identify outliers and clean data so that unusual values do not distort monthly averages. In the case of highly skewed distributions, we use the median value as opposed to the mean because medians are found to be the best measure of central tendency in the case of skewed data.

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