Question

San Francisco 49ers’ linebacker Patrick Willis won the Defensive Rookie of the Year Award in 2007 with a total of 174 tackles. Tackles are measured on what kind of a scale? Is a variable measuring the number of tackles considered continuous or discrete?

Choose.

(a)Ratio scale; discrete

(b)Interval scale; discrete

(c)Ratio scale; continuous

(d)Interval scale; continuous

Which of the following is an example of cross-sectional data?

Choose.

(a)GDP of the United States from 1990–2010

(b)Daily price of DuPont stock during the first quarter

(c)Quarterly housing starts collected over the last 60 years

(d)Results of market research testing consumer preferences for soda

Answer 1

Answer to question# 1)

Tackles are countable in form of integers and hence they are discrete

Since they tackles can be compared in ratio form as well , they have a ratio scale

hence the correct answer choice is: "Ratio : Discrete"

.

Answer to question# 2)

Cross sectional data implies: collecting all the information at the same point of time.

In first answer choice the data is collected over a time period of 20 years from 1990 to 2010, hence it is not Cross Sectional

In second answer choice the data relates to first quarter, again it is not cross sectional

In third answer choice the data is provided for a quarter, and hence it is not cross sectional

In fourth answer choice the immediate results are considered, and hence this is a perfect example of cross sectional data

Thus the correct answer choice is "fourth option"