Test Preview

  1. Which is NOT true of an experimental or prospective research design?
  1. Which of the following correctly characterizes the difference between a parallel clinical trial and a crossover trial?
  1. Which of the following correctly characterizes the difference between cross-sectional and longitudinal designs?
  1. Which of the following is a method for minimizing bias?
  1. Identification of cause and effect relationships is best facilitated by _______________.
  1. What is power analysis?
  1. Which of the following methods is NOT appropriate for generating random numbers?
  1. Which of the following is NOT appropriate in determining the size of the sample for an investigation?
  1. The measures of central tendency include which of the following?
  1. The collection of individuals that falls between one standard deviation below and one above the mean comprises approximately _____ of a normally distributed population.
  1. When the p-value is set at 0.05 in an experiment comparing two different therapies, this typically means that there is _______________.
  1. In an experiment comparing the efficacy of two different therapies where a t-test demonstrates a p value of 0.001, this means _______________.
  1. Which of the following information should be included for each inferential statistical test?
  1. Which of the following is a scientific basis for the recommendation of new therapy?
  1. Why do examiners, scoring oral disease levels in an experiment, need to be calibrated?