When single points are used to designate the frequency of each ...

[JMatthes]

When single points are used to designate the frequency of each score, the
  points being connected by a series of straight lines, this is called a
 
  a. frequency polygon
  b. frequency rectangle
  c. scatter plot
  d. histogram

Question 2

If 15 participants take a pretest and a posttest and have a mean difference score of 1.5, and if the standard deviation of the comparison distribution is 0.5, the t score is
 
  A) 0.5 / 1.5 = 0.33
  B) 1.5 / 15 = 0.10
  C) 1.5 / 0.5 = 3
  D) 1.5 / 0.52 = 6

[Liamb2179]

Answer to Question 1

Thank you

Answer to Question 2

C

[JMatthes]

Excellent

[Perkypinki]

Gracias!