Sign In
Not register? Register Now!
Essay Available:
Pages:
3 pages/β‰ˆ825 words
Sources:
3 Sources
Style:
APA
Subject:
Mathematics & Economics
Type:
Essay
Language:
English (U.S.)
Document:
MS Word
Date:
Total cost:
$ 12.96
Topic:

Normal Curves, Variability, and Plotting

Essay Instructions:

Michelson, S. & Schofield, T. (2002). Chapter 1: Description. Measures of Central Tendency (pages 9-17). In: The Biostatistics Cookbook: The Most User-Friendly Guide for the Bio/Medical Scientist. Kluwer Academic Publishers. Available in Ebrary, accessed via Trident’s online library.
Norman, G., and Streiner, D. (2008). Chapter The Second: Looking at the Data: A first look at Graphing (pages 7-18). In: Biostatistics The Bare Essentials. 3rd Edition. BC Decker Inc. PMPH USA, Ltd. Shelton, CT. eISBN: 9781607950585 pISBN: 9781550093476. Available in Ebrary, accessed via Trident’s online library.
Norman, G., and Streiner, D. (2008). Chapter The Fourth: The Normal Distribution (pages 31-36). In: Biostatistics The Bare Essentials. 3rd Edition. BC Decker Inc. PMPH USA, Ltd. Shelton, CT. eISBN: 9781607950585 pISBN: 9781550093476. Available in Ebrary, accessed via Trident’s online library.
Additional Reading (Optional)
Minnesota Department of Health. Histogram. Retrieved from http://www(dot)health(dot)state(dot)mn(dot)us/divs/opi/qi/toolbox/histogram.html
PQ Systems (yr. unknown). Histogram: What is it? 106-111. Retrieved from http://www(dot)pqsystems(dot)com/healthcare/images/health.pdf
Villenueve, P. (2002). Normal Distributions: Encyclopedia of Public Health. Retrieved from http://www(dot)enotes(dot)com/normal-distributions-reference/normal-distributions
Additional Resources (Optional):
The Johns Hopkins University and John McGready (2009). Describing Data: Part I, Section D. Visually Displaying Continuous Data: Histograms. Retrieved from http://ocw(dot)jhsph(dot)edu/courses/introbiostats/PDFs/IntroBiostats-sec1d_McGready.pdf
The Johns Hopkins University and John McGready (2009). Describing Data: Part II. Section A: The Normal Distribution. Retrieved from http://ocw(dot)jhsph(dot)edu/courses/IntroBiostats/PDFs/IntroBiostats-sec2a_McGready.pdf
Khan Academy (2012). Histograms. Retrieved from http://www(dot)khanacademy(dot)org/math/algebra/ck12-algebra-1/v/histograms
This is a three-part assignment related to a study of contraceptive drug use among women. Following is a distribution of systolic blood pressures cross tabulated by age and pill use for women.
Table 2A. Distribution of systolic blood pressure, cross-tabulated by age and pill use.
Blood Pressure
(mm) Age 35-44
Non-Users Users
% %
Under 90 1 1
91-95 2 1
96-100 5 4
101-105 9 5
106-110 11 7
111-115 15 12
116-120 16 14
121-125 9 11
126-130 10 11
131-135 8 10
136-140 5 7
141-145 4 6
146-150 2 5
151-155 1 3
156-160 1 1
160 and over 1 2
Total Percent 100 100
Total Number 3,494 1,028
First, state whether blood pressure in Table 2A would be a continuous variable or a discrete variable. Explain. Then supposing that the number of women in each of groups (non-users and users) were identified, would the number of women in each category be a continuous variable or a discrete variable? Explain.
Part 2: Use any free online histogram maker* to draw Histograms for the blood pressures of the users and nonusers ages 35 - 44. Discuss one conclusion that can be made about blood pressure and pill use. *Here are some free resources: 
http://www(dot)zweigmedia(dot)com/RealWorld/stats/histogram.html
Part 3: Based on what you’ve learned in this module about normal distributions, explain why a normal approximation of data would be helpful to view the data. For example, you could describe the steps that one would take to estimate the percentage of women with blood pressures in an age group.
Assignment Expectations
Use the information in the modular background readings as well as resources you find through ProQuest or other online sources. Please be sure to cite all sources and provide a reference list at the end of the paper. Submit the paper as a Word document through the link provided for the assignment.
Length: 2–3 pages typed and double-spaced.
Your Case paper will be further evaluated based on the following criteria:
Precision (Excellent; Good; Average; Poor)
•Each question and or assignment requirement is addressed in the paper.
•Accuracy of your answers, key points and supporting discussion
Clarity (Excellent; Good; Average; Poor)
•The paper is well organized, concise, reads clearly, and it is not confusing.

Essay Sample Content Preview:

NORMAL CURVES, VARIABILITY, AND PLOTTING
Name
Course
Institution
Instructor
Date
Part A: Continuous variable vs. discrete variable
The Blood Pressure (mm) as presented in the table is a continuous variable given that the blood pressure would take any value ranging from below 90mm to the highest being 160 mm and more. This shows that the blood pressure would only fall within this range as it is not finite. In any case, the measurement of blood pressure tends to be more accurate depending on the measurement equipment tool used with accuracy expressed up to the decimal points. As such, the blood pressure interval represents the possibilities that would be expected if the measurement is accurate. This contrasts with discrete variables that are counted and less likely to be measured, while discrete variables measured to exact precision share similar characteristics with continuous variables.
A discrete variable is one associated with a countable set meaning that the values are finite and assume whole numbers (Norman, Streiner, 2008). As such, identifying the number of women who are non-users as well as the users of the contraceptive pill would be a discrete variable. The discrete variable probability distribution would then be used for the two categories. The numbers of women who use or do not use the pill are easily categorized between the two options since they can be counted. Discrete variables are countable and in such a scenario it is possible to identify the blood pressure interval and frequency in numbers since discrete variables rely on dichotomous data. Part 2: Histograms
[Non users and users of the pill, provided as separate pictures]
In both cases the rate of blood pressure at the 116-120 mm was the highest recorded frequency for the non users and users of pill. Among the non-users it was the reported frequency of blood pressure at the 116-120 mm range was 16 % while it was 14 % among the users. On the other hand, from 150 mm there was a 3 % and 8% representation among the non –users users of the pill. It can broadly be seen that users of the pill tend to have higher blood pressure compared to those who do not use the pill, given that there is higher frequency of those who use pills with high blood pressure. At the same time, the range between less than 90 mm to 120 mm is equivalent to 59% of the representations for the pressure reported among non –users, but 44 % among the users. Hence, the non users of the pill were more likely to have lower levels of blood pressure and this also validates the other observations on the likely adverse effects of the pill towards leading to elevated levels of blood pressure.
The implication of the study results is that women need to be careful on how the use the pill, sinc...
Updated on
Get the Whole Paper!
Not exactly what you need?
Do you need a custom essay? Order right now:
Order

πŸ‘€ Other Visitors are Viewing These APA Essay Samples:

HIRE A WRITER FROM $11.95 / PAGE
ORDER WITH 15% DISCOUNT!
Order Now