Short version: on a day when they expect low viewership, they misspell the name of the news show and Nielsen doesn't register it or add that night's ratings to calculate the weekly average. The original reporting is in the WSJ, I link to Kevin Drum to bypass the paywall.
http://www.motherjones.com/kevin-drum/2017/07/heres-how-to-get-better-tv-ratings-without-the-hassle-of-getting-more-viewers/ -- -- TV or Not TV .... The Smartest (TV) People! You received this message because you are subscribed to the Google Groups "TV or Not TV" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/tvornottv?hl=en --- You received this message because you are subscribed to the Google Groups "TVorNotTV" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
