An example of a statistical inference is

An example of a statistical inference is
 
  a. generalizing data from a sample of girls to a population of girls.
  b. generalizing data from a sample of girls to a population of people.
  c. categorical data.
  d. the relationship between height and weight.

Question 2

When is it most important to know the exact calculational formulae used to calculate a statistic?
 
  a. when it is frequently used
  b. when it is very complex
  c. when it deals with more than two groups
  d. when the formula is important in defining the concept

Question 3

If you were interested in finding out how learning increases with increases in studying, what statistical question would you be asking?
 
  a. Is there a relationship?
  b. Is there a difference?
  c. Is there a variable?
  d. A decision tree is needed to answer this question.

Question 4

A researcher obtained attractiveness ratings on a scale from 1 to 100. She then classified people into attractive and unattractive groups on the basis of these scores. In this example, the researcher used _______ data to create _______ data.
 
  a. descriptive; inferential
  b. inferential; logical
  c. categorical; measurement
  d. measurement; categorical