In the calculation of the arithmetic mean for grouped data, which ...

[mpobi80]

In the calculation of the arithmetic mean for grouped data, which value is used to represent all the values in a particular class?
 
  A) the lower limit of the class
  B) the upper limit of the class
  C) the frequency of the class
  D) the midpoint of the class

Question 2

The probability that a person wants either better fuel efficiency or a vehicle navigation system is:
 
  A) 0.90
  B) 0.10
  C) 0.45
  D) 0.35

[dantucker]

Answer to Question 1

D

Answer to Question 2

A