Question

PLEASE help as soon as possible

Answer 1

1) Yes, given numbers it could yield variable data because the amount of trash generated would not be constant. 
What is the average number of lbs of trash thrown out by households each week?
2) Google images "dot plots", it should be pretty self-explanatory
3) mean: add up all the numbers and divide by 26(the amount of numbers given)
median: basically just cross off numbers at each end of the list while alternating until u get one or two numbers. so cross off 0, then 17, then 1, then 9, etc. if it feels tedious and pointless that's bc it is, don't worry, you're probably doing it right. 
range: biggest minus smallest. 17-0= 17
4) i'm too tired to explain watch this
http://study.com/academy/lesson/what-are-center-shape-and-spread.html