Which of the following pairs of variables are probably positively ...

[arivle123]

Which of the following pairs of variables are probably positively correlated?
 
  a. weight and IQ of a person
  b. amount of time spent rehearsing material and amount learned
  c. the amount of traffic in a city and the city's air quality
  d. price of gasoline and number of miles driven per week

Question 2

The number of legs on a centipede is an example of a(an) _______ scale.
 
  a. nominal c. ratio
  b. ordinal d. continuous

[Jbrasil]

Answer to Question 1

B
Things that are positively correlated increase and decrease together.

Answer to Question 2

C