ReadWriteWeb, By Dan Rowinski / May 25, 2011
Google Labs has come out with a new tool that it is calling "Like Google Trends in reverse." Google Correlate allows users to enter a data series and get back queries that follow a similar pattern. Correlate is based off the technology that Google used to create Google Flu Trends.
When you enter a data set into Correlate, it uses the Pearson Correlation Coefficient - a principle of statistics regarding data sets - to show the highest related coefficient within the search term. Correlate data can be input from either a spreadsheet or by exporting a CSV. Correlate also has pre-existing data sets from locations like states.
Here is a useful Correlate tutorial which explains
Google Correlate is like Google Trends in reverse. With Google Trends, you type in a query and get back a series of its frequency (over time, or in each US state). With Google Correlate, you enter a data series (the target) and get back queries whose frequency follows a similar pattern.