No one ever is considering what Granny thinks when movie or television ratings are concerned. The age groups normally considered are 18-34 or 18-49, because tho

No one ever is considering what Granny thinks when movie or television ratings are concerned. The age groups normally considered are 18-34 or 18-49, because those are the ones which far outweigh all others in terms of commercial interest. Also, all other age groups don't make up a significant part of the movie going crowd so even if they would contribute ratings it wouldn't make much of a difference.