Zillow statistics - determination of Q-o-Q values.When the value is reported for a Q-o-Q change, how is that value determined? Is the definition of quarter (January/February/March - Q1; April/May/June - Q2; July/August/September - Q3; October/November/December - Q4) appropriate. If so, is the Q-o-Q value determined by simply taking the average of the Zillow Home Value Index for each month?For a particular region (Highland Park), there is monthly information available since 1996 but Zillow does not provide Q-oQ data for some of the home categories and I'd like to calculate the information myself but wanted to verifiy this information before proceeding. Thanks.January 12 2011 - Staten Island00YesReport a ProblemProblemSelect oneOffensive contentIrrelevant contentSpam (pure self-promotion)OtherDetailsYour emailPlease enter a valid email address.Submit CancelContent flaggedWe will review this content. Thanks for helping make the site more useful to everyone. To learn more, read Zillow's Good Neighbor Policy.We're sorry. This service is temporarily unavailable. Please come back later and try again.