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Quantitative Analysis in the Health Sciences essay assignment
Quantitative Analysis in the Health Sciences essay assignment
- Any distribution of values may be completely and accurately described by presenting three pieces of information. What are those three pieces?
- What distinguishes a true experiment from a quasi experiment?
- What two inferences can be drawn from data collected from a sample?
- For the following hypothesis, what is the dependent variable: Nursing students who learn health assessment “on-site” receive higher scores on the NCLEX than nursing students who learn health assessment through a virtual, on-line course?
- In what form is the hypothesis in question #4 stated?
- For a research study in which the outcome of the intervention is measured as “optimal” vs. “sub-optimal,” what level of measurement is employed?
- If a distribution of scores has a mean of 65.5, a median of 77.8 and a standard deviation of 15, what is the shape of the distribution?
- What measures of central tendency and variability are appropriate in describing a multi-modal distribution shape?
Central Tendency: _____
Variability: ________
Briefly define each of the following:
- Statistic:
- Frequency Polygon:
- Percentile:
- Ordinal Data:
Items 13-18 relate to a distribution having a mean of 100 and a standard deviation of 15.
- If this instrument is used to screen for pathological conditions and the highest 10% are screened as “presumptive positives”, what is the cut-off score for a positive screen?
- What percent of the general population would be expected to score between the raw scores of 90 and 110?
- If you used this instrument to provide relative rankings for students in terms of their scores, who would score higher, Student A with a z score of .70 or Student B with a raw score of 113?
- If you took the test as a preliminary measure of knowledge in differential diagnoses and received a score of 120, what percent of the population scored higher than you?
- If there were a certification exam in which the minimum passing score is 85, did Student A, who received a z score of -.67, pass the exam?
- If a researcher wished to study only the middle 50% of the population, above and below which raw scores should she exclude potential subjects?
- Organize the follow raw data into a frequency distribution:
15 15 16 16 16 17 17 17 17 17 18 18 19 19 19 20 20 21
- For the frequency distribution you prepared for item 19 (above), present the data as a histogram.
The remaining items relate to the following data:
x f
30 2
31 4
32 5
33 7
34 9
35 6
36 6
37 9
38 5
39 4
40 3
Provide the following statistical data:
- Mean: _____
- Median: _____
- Mode: _____
- Range: _____
- Variance: _____
- Standard Deviation: _____
- Q: _____
- Shape: _____
- Approximate measure of central tendency: _____
- Appropriate measure of variability: _____