What is this census or sample survey?

a) to check the quality of the food provided by the school cafeteria.Some students in each class are asked to give their opinion





b) to find the favourite music group of teenagers of a city twenty 16 year old teenagers are surveyed from each city.





c) To find the favourite the item on a restaraunt menu .All custoers eating in the restaraunt are surveyed.





Are they Sample or census??








2. IdenTIFY the population in the date collacted





a)The hotel manager wants to know how many of their guests use th spa facilites





b)The school principal wants to know how many teachers need a computer by their desk.





c) A lawn-care companty wants to know if their customers prefer environmentally friendly products for their lawn

What is this census or sample survey?
It's a survey if you only interview a small group. It's a census if you interview everybody.


a) and b) are surveys. c) is census.





2)Population:


a)All those who use spa facilities.


b)All teachers who need a computer at their desk.


c)All customers prefer environmentally friendly products for their lawn.