. Researchers have discovered that children experiencing ...

[viki]

. Researchers have discovered that children experiencing Attention Deficit Hyperactivity Disorder (ADHD) show improvements if they attend classes involving behavioral and social skills, compared to a group of ADHD children who did not attend the classes.
 
  The group of children who attended the classes constitute the
  a. experimental group.
  b. independent group.
  c. control group.
  d. placebo group.

Question 2

When the difference between any two consecutive measurements on a measurement scale are equal, no matter where on the number line they fall, but you can't identify if one data point is twice the value of another, you are using what measurement scale?
 
  a. Nominal
  b. Ordinal
  c. Interval
  d. Ratio

[akemokai]

Answer to Question 1

a

Answer to Question 2

c

[viki]

Great answer, keep it coming

[xiazhe]

Thanks for the timely response, appreciate it