Surveying is the new whatever
"So the 3.9 hours is the avereage of children aged 5 who bring home one reading book each week to children aged 18 who are expected to do homework and revise for three or possibly four A-levels. I think the conclusion is whatever you would like it to be."
Yep. There are just too many variables. The difference between expected learning between 5yr olds and 18yr olds just isn't worth even taking the time to sort out, and certainly not any valuable insight gained from that age range spread over 985 respondents. WTF uswitch? Deadline creep?