Facebook admits more measurement errors

Facebook has admitted it has discovered a number of errors in the way it measures audiences across a range of its products and has unveiled a raft of updates aimed at improving how it measures audience as it looks to offer advertisers and their agencies “clarity and confidence”.
The discovery comes after Facebook said earlier this year it had overstated how long users watch videos for on its site by up to 80%. That prompted a deeper investigation by the social networking site into w