1) Prince George's County Public Schools wants to access the effectiveness of its new 1st grade reading program. Ten 1st grade classrooms are randomly selected from across the county. What kind of sampling method is being used?
2) Choose the best answer:
a. Kellogg's decided to test a new cereal in the Washington, D.C. area and asked consumers to rate it on a scale from 1(poor) to 10(excellent). The level of this measurement is
(i) Nominal
(ii) Ordinal
(iii) Interval
(iv) Ratio
b. RSVP of Ellicott City, a wedding company conducted a survey to determine the average amount of money spent on weddings in the Baltimore area. The average was $25,000. The value $25,000 is a (an)
(i) Statistic
(ii) Parameter
(iii) Variable
(iv) Element
(v) Observation
3) The Baltimore City Council wants to determine how many cars are owned by each resident household in the Inner Harbor area. A random sample of 500 households is asked how many cars are owned by members of your household. What is an appropriate method for graphing the data?