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We are now firmly living in the world of big data. These days, we scratch around much less for the funds to do a few surveys; instead we are deluged with data, generally collected by others for purposes that don't match our own. And the job is to extract meaning. This isn't easy, given that it isn't normally practicable to investigate the data thoroughly for anomalies.


Case study - Blackwall Tunnel: How careful, high-level testing can help remove the effect of outliers from large datasets