EDUC 815 Quiz Statistical

EDUC 815 Quiz: Statistical and Sampling Techniques

  1. Stem-and-leaf displays are useful because they make it easy to
  2. Correlational statistics serve the purpose of determining
  3. Compared to the median, the mean
  4. One way to increase statistical power is to
  5. The mean and standard deviation of a sample’s distribution of scores on a measure can be used to estimate
  6. Age equivalents, grade equivalents, and normal curve equivalent scores are all
  7. Stratied random sampling is usually a better approach than random sampling if the researcher
  8. The practical signicance of a research nding usually is best determined by
  9. The mean and the _____________________ taken together, give a good description of the nature of the group being studied.
  10. One of the advantages of stem-and-leaf displays of data is that they facilitate the detection of outliers. What is an outlier?
  11. “An investigator wants to compare the reading comprehension of rst-grade students who are taught reading by treatment A versus rst-grade students taught reading by treatment B. He selects all rst graders in Washington Elementary School (6 classes, N = 200) and places their names in a hat. The rst 60 names taken from the hat are placed in treatment A, and the next 60 names are placed in treatment B. What procedure has the researcher used?”
  12. Which of the following is an important criterion for determining whether an experiment has population validity?
  13. The median of a group of scores
  14. Skewness means that
  15. A test of the statistical signicance of the difference between two sample means results in a t value that is signicant at the .01 level. Which of the following is not a correct interpretation of this nding?
  16. The difference between continuous scores and discrete scores is that
  17. Replication logic refers to
  18. If a score distribution forms a normal curve,
  19. The deviation of a sample statistic from the actual parameter for the population from which the sample was randomly drawn is a measure of
  20. Statistical power is
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Files Included - Liberty University
  1. EDUC 815 Quiz Statistical 1
  2. EDUC 815 Quiz Week 3 Statistical and Sampling
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