## Repustate’s new metric

One of the newest and most popular features of Repustate’s Social Media Monitoring platform has been the addition of a metric we call the Repustate Promoter Score, or RPS for short. The RPS provides a simple score, from 0 to 10, that indicates the overall sentiment people have about a particular topic in question. This could be a person, a brand, a product, anything.

The RPS is calculated as follows: Take the total number of positive mentions, the total number of negative mentions, compute the Wilson Confidence interval using those two numbers, and then multiple by 10 to get a score between 0 and 10. That’s a mouth full, let’s dig a bit deeper.

## How it works

Total number of positive & negative mentions is easy enough to understand, but what’s this about a Wilson Confidence interval? Well, it’s a math formula which tries to determine how confident you are about a particular outcome given the data. To put this in social terms, let’s say we have 1 tweet about the Apple iPhone and that tweet is positive. How confident are we that everyone is positive about the iPhone? Well, not too confident, because we only have 1 piece of data. But let’s say we have 1000 tweets, and 950 are positive. Now our confidence level rises, and that’s the thinking behind using the Wilson Confidence internal.

## Some examples

Here are some examples of Repustate Promoter Scores given a number of positive and negative mentions:

Positive: 1, Negative: 0, RPS: 2

Positive: 10, Negative: 0, RPS: 7

Positive: 10, Negative: 10, RPS: 3

Positive: 0, Negative: 100, RPS: 0

Positive: 100, Negative: 5, RPS: 9

When you create a new data source, Repustate calculates the RPS on an ongoing basis so you can see how the RPS fluctuates over time in your dashboard.