Which of the following is (are) not a symmetrical distribution? ...

[urbanoutfitters]

Which of the following is (are) not a symmetrical distribution?
 
  a. a bell-shaped curve
  b. a J-shaped curve
  c. a rectangular curve
  d. an inverted U-shaped curve
  e. a bell-shaped, J-shaped, and an inverted U-shaped curve

Question 2

In a frequency polygon the points are plotted over _______ at a height corresponding to the frequency of the interval.
 
  a. the midpoint of each interval c. the upper real limit
  b. the lower real limit d. none of these

[lcapri7]

Answer to Question 1

B

Answer to Question 2

A