C784 Pre-Assessment Guide

C784 Pre-Assessment Guide

C784 Pre-Assessment Guide

Name

Western Governors University

C784 Applied Healthcare Statistics

Prof. Name

Date

1. Given the following set of numbers: 3.3, –2.3, –16, 25

What are the square roots of the whole number?

  • ± 2.3

  • ± 3.3

  • ± 5.0

  • ± 4.0


2. Given the following set of numbers: 10, 2.5, –4, –4.5, 5

What is the sum when adding together only the whole numbers?

  • 5.5

  • 11.0

  • 15.0

  • 12.5


3. Given the following expression: 4 + 7 × (6 – 3)²

What is the answer using proper order of operations?

  • 25

  • 67

  • 46

  • 99


4. Given the following expression: 5 × (30 – 27)² + 4

What is the correct answer using the proper order of operations?

  • 34

  • 49

  • 65

  • 81


5. What is the greatest common factor of 132 and the square root of 121 using prime factorization?

  • 1

  • 2

  • 10

  • 11


6. What is the greatest common factor of 24 and 84 using prime factorization?

  • 2

  • 4

  • 12

  • 8


9. A patient’s protein intake for today has been 15.76 g, 8.49 g, and 22.58 g.

What is the total protein intake rounded to the nearest tenth?

  • 46.5 g

  • 46.8 g

  • 46.9 g

  • 47.0 g


10. Given the equation (not fully shown)

What is the solution rounded to the nearest thousandth?

  • 0.03675

  • 0.0368

  • 0.368

  • 0.037


11. An intravenous drip is infused at a rate of 4.5 milliliters per minute.

How many milliliters are infused per hour?

  • 0.075 mL

  • 2.700 mL

  • 75.000 mL

  • 270.000 mL


12. A patient’s medication was increased by 40 milligrams.

What is the percent increase if the original medication was 180 milligrams?

  • 2.2%

  • 4.5%

  • 22.2%

  • 45.0%


13. What is the Fahrenheit equivalent for a patient’s room that needs to be kept at 25°C?

  • 70°

  • 75°

  • 77°

  • 80°


14. What is the Celsius equivalent for a patient who is running a fever of 102°F?

  • 37.9°C

  • 38.9°C

  • 39.9°C

  • 40.9°C


15. What is the value of x in this equation? 2x + 3 = 13

  • 5

  • 10

  • 76

  • 106


24. A survey shows a positively skewed distribution.

How are the mean, median, and mode related?

  • Mean < Median < Mode

  • Mode < Median < Mean

  • Mean < Mode < Median

  • Median < Mode < Mean


25. ICU systolic blood pressure readings: 140, 150, 154, 154, 170, 176, 180

What is the mode?

  • 140.00

  • 154.00

  • 160.57

  • 170.00


26. Given data collected from cancer patients, what is the skew?

  • Normal

  • Bimodal

  • Skewed left

  • Skewed right


29. Children’s weights recorded.

Which display best shows distribution and individual values?

  • Box plot

  • Stem plot

  • Bar chart

  • Pie chart


30. Heart rate observations recorded.

Which display shows exact individual values?

  • Stem plot

  • Pie chart

  • Bar chart

  • Histogram


31. Hours of overtime worked by nurses: 3, 7, 2, 4

What display should be used?

  • Box plot

  • Stem plot

  • Bar chart

  • Histogram


32. Pie chart of hepatitis types is misleading because:

  • Hepatitis B should be bigger

  • Hepatitis B should be smaller

  • Percentages add up to more than 100%

  • Percentages add up to less than 100%


33. Clinic misrepresents vaccine data by:

  • Showing only two years

  • Ending vertical axis at 30

  • Starting vertical axis at 10

  • Creating a positive skew


35. Relationship between gender and exercise type:

  • Categorical to categorical

  • Categorical to quantitative

  • Quantitative to quantitative

  • Quantitative to categorical


36. Relationship between age and diastolic blood pressure:

  • Categorical to categorical

  • Quantitative to categorical

  • Categorical to quantitative

  • Quantitative to quantitative


37. One categorical and one quantitative variable:

Which display is appropriate?

  • Scatterplot

  • Two-way table

  • Decision table

  • Side-by-side box plot


38. Blood pressure among CPAP vs non-CPAP patients:

Which numerical measure is appropriate?

  • Regression analysis

  • Five-number summary

  • Correlation coefficient

  • Conditional percentages


39. Study on gender and hypertension:

  • Regression analysis

  • Five-number summary

  • Correlation coefficient

  • Conditional percentages


40. Study on blood pressure and hemoglobin A1c:

  • Standard deviation

  • Five-number summary

  • Correlation coefficient

  • Conditional percentages


41. Smoking and lung cancer retrospective study:

Which statement is correct?

  • Nonsmokers less likely because 23% < 77%

  • Smokers more likely because 23% > 22%

  • Nonsmokers less likely because 78% > 77%

  • Smokers more likely because 77% > 22%


42. Surgery survival rates at two hospitals:

  • Hospital B higher because 98% > 97%

  • Hospital A higher because 3% > 2%

  • Hospital B higher because 98% > 2%

  • Hospital A higher because 97% > 3%


43. Physician attire preference:

  • Patients prefer scrubs because 65% > 17%

  • Patients do not prefer scrubs because 7% < 9%

  • Patients prefer formal + white coat because 67% > 17%

  • Patients do not prefer scrubs because 65% < 67%


44. Given a scatterplot:

What best describes the relationship?

  • Weak, no relationship

  • Strong, no relationship

  • Weak, linear relationship

  • Strong, linear relationship


45. Given a scatterplot:

What best describes the relationship?

  • Weak, linear relationship

  • Strong, linear relationship

  • Weak, nonlinear relationship

  • Strong, nonlinear relationship


46. Scatterplot with an outlier:

How does the outlier impact the relationship?

  • It weakens the negative relationship

  • It weakens the positive relationship

  • It strengthens the positive relationship

  • It strengthens the negative relationship


47. Removing the outlier would:

  • Weaken a positive relationship

  • Strengthen a positive relationship

  • Weaken a negative relationship

  • Strengthen a negative relationship


48. Which number of work days missed is an outlier?

  • 3

  • 5

  • 10

  • 8


55. Probability newborn assigned to a non-male physician?

  • 0.17

  • 0.33

  • 0.50

  • 0.67


56. Anxiety score from regression equation:

  • 8

  • 10

  • 21

  • 26


57. Fair coin flipped again. Probability of heads?

  • 0.17

  • 0.2

  • 0.25

  • 0.5


58. Relative frequency for wound care?

  • 0.10

  • 0.25

  • 0.30

  • 0.35


59. Coin flipped 3 times. Probability of exactly 2 heads?

  • 0.250

  • 0.375

  • 0.500

  • 0.875


60. Probability red ball is second?

  • 0.33

  • 0.50

  • 0.67

  • 0.83


61. Possible baby sex outcomes (3 births):

  • MMM, MFM, FMF, FFF

  • MMM, MMF, FFM, FFF

  • All 8 combinations (2³ = 8)

  • Duplicate combinations


62. Elevated temperature & high cholesterol relationship:

  • related

  • disjoint

  • dependent

  • independent


63. Probability of influenza and appendicitis:

  • 5%

  • 15%

  • 30%

  • 45%


64. Probability of running or joining a gym:

  • 0.60

  • 0.65

  • 0.70

  • 0.85


65. Probability of diabetes or heart disease is calculated by:

  • P(D) + P(H) − P(D and H)

  • P(D) × P(H)

  • P(D | H)

  • P(H | D)


66. Probability none of 8 patients have high BP:

  • (0.37)⁸

  • (0.63)⁸

  • 1 − (0.37)⁸

  • 8 × 0.63


67. Probability of primary or specialty care:

  • (300/625) + (225/625) − (100/625)

  • (300/625) × (225/625)

  • (100/625)

  • 1 − (100/625)


68. Probability of Medicare and Medicaid:

  • 0.035

  • 0.10

  • 0.25

  • 0.50


69. Probability of Virus A given Virus B:

  • ≈ 59%

  • 18%

  • 10.62%

  • 72%


70. Probability of itchy eyes and sore throat:

  • 18.36%

  • 36%

  • 51%

  • 87%