# MATH 325 DeVry Final Exam Latest

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MATH 325 DeVry Final Exam Latest

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MATH 325 DeVry Final Exam Latest

MATH 325 DeVry Final Exam Latest

Question 1.1. (TCO 1) A histogram may be used to display: (Points : 5)

• discharges by age.
• discharges by third-party payer.
• discharges by service.
• discharges by sex.

Question 2.2. (TCO 2) You want to graph the number of deaths due to prostate cancer for the years 1998 to 2002. The best choice is to use a: (Points : 5)

• frequency polygon.
• histogram.
• line graph.
• pie chart.

Question 3.3. (TCO 3) There are 40 students in Section I of a medical terminology class and 20 students in Section II. The mean score on a Midterm Exam for Section I is 60, and the mean score for Section II is 70. What is the mean score for the two classes combined? (Points : 5)

• 63.3
• 65
• 67
• Not enough information provided to answer question

Question 4.4. (TCO 4) If population parameters are known, and the sample is sufficiently large, which of the following tests would be most appropriate to test the difference between two population proportions? (Points : 5)

• Paired t-test
• One-tailed test
• T-test for two independent samples
• Z-test for two population proportions

Question 5.5. (TCO 5) If a distribution has a long tail to the right, it is: (Points : 5)

• bimodal.
• abnormal.
• positively skewed.
• negatively skewed.

Question 6.6. (TCO 6) A normal distribution has a mean of 20 and a standard deviation of 5. 95% of the scores fall between: (Points : 5)

• 15 and 25.
• 10 and 30.
• 5 and 35.
• Not enough information provided

Question 7.7. (TCO 7) We have drawn a simple random sample of 100 patients who were discharged from a critical care hospital in January. Of all the patients discharged during January, 55% were women and 45% were men. To match the population, our sample should contain: (Points : 5)

• 45 men and 55 women.
• 50 men and 50 women.
• 55 men and 45 women.
• The ratio of men to women in the sample size is not important.

Question 8.8. (TCO 8) In the above problems, the sample size is 100. The number of degrees of freedom for evaluating the statistical significance of the test result is: (Points : 5)

• 99.
• 98.
• 97.
• Not enough information provided

Question 9.9. (TCO 9) The nonparametric counterpart of the paired t-test is the: (Points : 5)

• sign test.
• Kruskal-Wallis test.
• Mann-Whitney test.
• chi-square goodness-of-fit test.

Page 2

Question 1. 1. (TCO 1) Describe at least two differences between incidence and prevalence rates, in your own words. (Points : 25)

Question 2. 2. (TCO 2) The purpose of a table, chart, or graph is to communicate information to the data user. In your own words, what 3–4 questions should be considered to accomplish this objective? (Points : 25)

Question 3. 3. (TCO 3) Compare and contrast the following aspects of validity in your own words: content validity, construct validity, and criterion-related validity. (Points : 25)

Question 4. 4. (TCO 4) In your own words, explain the difference between a population parameter and a sample statistic. (Points : 25)

Question 5. 5. (TCO 5) In your own words, compare the normal distribution with the standard normal distribution and include standard deviation in your answer. (Points : 25)

Question 6. 6. (TCO 6) Compare and contrast the z-distribution with the t-distribution, in your own words. (Points : 25)

Question 7. 7. (TCO 7) When conducting ANOVA to compare the means of three groups, under what conditions would we reject the null hypothesis? What conclusion would be drawn? (Points : 25)

Question 8. 8. (TCO 8) In your own words, explain the relationship between the Pearson r and the coefficient of determination, r2. What methods of display would be best used for display? (Points : 25)

Question 9. 9. (TCO 9) Explain the major differences between parametric and nonparametric procedures, in your own words. (Points : 25)