This is far less convincing than a systematic study with statistical significance. Here, no matter how convincing the story is, the sample size is one and stand

This is far less convincing than a systematic study with statistical significance. Here, no matter how convincing the story is, the sample size is one and standard deviation is infinite. NYTimes comment section echoes this: > One data point hardly proves anything. There could be any number of reasons. Maybe the appraiser was incompetent, maybe he was having a bad day, may he was sloppy with his work that day. But one anecdotal example does not prove anything. So these people did get an inaccurate appraisal. But they've hardly put together enough evidence to support their accusation of racism. If this appraiser showed a pattern of consistently undervaluing black-owned properties, then it might be a different story. You can't make this argument based on one isolated example. That said, I am pretty sure subjectivism in appraisal process has tons of biases, not just for race, but appraiser's favorite architectural style to whether it was a rainy day.