Which of the following accurately describes the chi-square test for goodness of fit? a. It is similar to a correlation because it uses one sample to evaluate the relationship between two variables. b. It is similar to both a correlation and an independent-measures t test because it can be used to evaluate a relationship between variables or a difference between populations. c. It is similar to an independent-measures t test because it uses separate samples to evaluate the difference between separate populations. d. It is similar to a single-sample t test because it uses one sample to test a hypothesis about one population.