An example of data that would be analyzed with a chi-square is

An example of data that would be analyzed with a chi-square is
 
  a. the mean scores received by men and women on a computer science lab report.
  b. the average number of meals eaten by cats and dogs.
  c. the numbers of Republican and Democrats who voted for and against stricter drunk-driving laws.
  d. the deviations from the median shown in the visual acuity levels of children and adults.

Question 2

When using the chi-square tables, we reject the null hypothesis when
 
  a. chi-square is larger than the tabled value.
  b. chi-square is smaller than the tabled value.
  c. chi-square is far from the tabled value in either direction.
  d. It depends.

Question 3

For a goodness-of-fit chi-square test, the degrees of freedom are equal to
 
  a. N  1, where N is the number of observations.
  b. C  1, where C is the number of categories.
  c. NC  1.
  d. (N  1)(C  1).

Question 4

The chi-square distribution is
 
  a. a sampling distribution.
  b. the distribution against which we evaluate chi-square values.
  c. a distribution whose shape varies with the number of degrees of freedom.
  d. all of the above

Question 5

The denominator in chi-square is there to
 
  a. keep the resulting answer in perspective relative to the total frequency.
  b. keep the result in perspective relative to the size of the expected frequency.
  c. keep people honest.
  d. control the probability of a Type II error.