| Order ID |
53563633773 |
| Type |
Essay |
| Writer Level |
Masters |
| Style |
APA |
| Sources/References |
4 |
| Perfect Number of Pages to Order |
5-10 Pages |
Description/Paper Instructions
Description
The data sets are in Stata data files called dentalregistration2021.dta and iifas and age2.dta on the Moodle page for the Introduction to Statistical Methods Course.
Save the files to a convenient location on your PC and read them into R. The data set contains variables that are ready for analysis and no recoding of variables is required, but you will need to label them appropriately and assign value labels to the variables where appropriate. You are expected to use both the R manual and the Introduction to Statistics manual to help you answer the questions.
Please check well in advance that you can access the data for analysis in case you have problems with this near the deadline!
When analysing the data and writing your report you should:
provide appropriate plots and /or tables to summarise the data
state and justify any assumptions you make,
describe the analysis you have done,
interpret the results in non-technical language
Your report should include the relevant sections of R output, copied and pasted into your document. Do not include R syntax in the output. You should ensure that your output and any plots you consider informative are appropriately and informatively labelled. [Do NOT print out and hand in the entire contents from the R console only include relevant output.]
Note that you do not have to analyse the data from every conceivable angle! A relatively simple analysis and clear interpretation will be appropriate.
(continued over page)
Context
An investigation of infant feeding attitudes among pregnant women was carried out in Glasgow in 2001. Data were collected from a sample of 129 women attending the Southern General Hospital or Millbrae Antenatal Clinic. Women were interviewed antenatally and asked about their intended method of feeding breast or bottle. They were also asked to complete the Iowa Infant Feeding Attitude Scale (IIAFS), which results in a score between 17 and 85. The higher the score the more positive is the womans attitude to breastfeeding. The IIAFS was also completed by the person who would provide most support for the woman during pregnancy (i.e. husband, partner, mother, sister). The following data were recorded:
Data
The data are stored in a Stata data file called iifas and age2.dta as follows:
WomanScr IIAFS score for the woman
SuppScr IIAFS score for main supporter
Age Womans age in years
Depcat2 Deprivation of area of residence 1: Affluent 2: Deprived
FeedInt Feeding intention at antenatal interview
1: Breastfeed 2: Bottle feed or undecided
Question 1 (total 29 marks)
a) What percentage of women intend to breastfeed in each deprivation level? Use an appropriate test and confidence interval to investigate whether the percentage who intend to breastfeed differs significantly between the two deprivation levels.
(7 marks)
b) Is there any evidence of a difference in the average IIAFS scores of women who intend to breastfeed and those who intend to bottle-feed (or are undecided)?
(8 marks)
c) Is there any evidence of a difference in the average IIAFS scores of the women and their supporters?
(8 marks)
d) Is there any evidence of a relationship between womens IIAFS score and their age?
(6 marks)
(continued over page)
Question 2 (total 16 marks)
a) A survey of the dental health of 5-year-old children was carried out in the east end of Glasgow. The numbers of decayed, missing and filled teeth were recorded for a random sample of 360 children. The area in which the study was carried out covered postcode sectors in deprivation categories 4, 6 and 7. One of the main questions of interest was whether there was a difference in the average number of sound teeth between children who had never been registered with a dentist (RegCat = 1), had previously been registered but now lapsed (RegCat = 2) and who were currently registered (RegCat = 3).
The data are stored in a Stata data file called dental registration2021. The variables of interest here are:
Sound: number of sound teeth
DepCat: deprivation category (4, 6 or 7)
RegCat: registration category (as defined above)
i) Is there any evidence of a difference in the average number of sound teeth between the 3 categories of registration?
(9 marks)
ii) The investigator was concerned about the interpretation of this result on the grounds that registration category was likely to be associated with deprivation (which in turn is likely to influence dental health). Carry out an appropriate test to show that there is a significant association between registration category and the deprivation category of the postcode in which the children live.
281452
Jan 20, 3:40 AM
Coursework needs to be done using the statistical software ‘R’. Datasets are simplistic and questions not very difficult. Datasets will be supplied to the successful bidder. Thanks
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RUBRIC
| QUALITY OF RESPONSE |
NO RESPONSE |
POOR / UNSATISFACTORY |
SATISFACTORY |
GOOD |
EXCELLENT |
| Content (worth a maximum of 50% of the total points) |
Zero points: Student failed to submit the final paper. |
20 points out of 50: The essay illustrates poor understanding of the relevant material by failing to address or incorrectly addressing the relevant content; failing to identify or inaccurately explaining/defining key concepts/ideas; ignoring or incorrectly explaining key points/claims and the reasoning behind them; and/or incorrectly or inappropriately using terminology; and elements of the response are lacking. |
30 points out of 50: The essay illustrates a rudimentary understanding of the relevant material by mentioning but not full explaining the relevant content; identifying some of the key concepts/ideas though failing to fully or accurately explain many of them; using terminology, though sometimes inaccurately or inappropriately; and/or incorporating some key claims/points but failing to explain the reasoning behind them or doing so inaccurately. Elements of the required response may also be lacking. |
40 points out of 50: The essay illustrates solid understanding of the relevant material by correctly addressing most of the relevant content; identifying and explaining most of the key concepts/ideas; using correct terminology; explaining the reasoning behind most of the key points/claims; and/or where necessary or useful, substantiating some points with accurate examples. The answer is complete. |
50 points: The essay illustrates exemplary understanding of the relevant material by thoroughly and correctly addressing the relevant content; identifying and explaining all of the key concepts/ideas; using correct terminology explaining the reasoning behind key points/claims and substantiating, as necessary/useful, points with several accurate and illuminating examples. No aspects of the required answer are missing. |
| Use of Sources (worth a maximum of 20% of the total points). |
Zero points: Student failed to include citations and/or references. Or the student failed to submit a final paper. |
5 out 20 points: Sources are seldom cited to support statements and/or format of citations are not recognizable as APA 6th Edition format. There are major errors in the formation of the references and citations. And/or there is a major reliance on highly questionable. The Student fails to provide an adequate synthesis of research collected for the paper. |
10 out 20 points: References to scholarly sources are occasionally given; many statements seem unsubstantiated. Frequent errors in APA 6th Edition format, leaving the reader confused about the source of the information. There are significant errors of the formation in the references and citations. And/or there is a significant use of highly questionable sources. |
15 out 20 points: Credible Scholarly sources are used effectively support claims and are, for the most part, clear and fairly represented. APA 6th Edition is used with only a few minor errors. There are minor errors in reference and/or citations. And/or there is some use of questionable sources. |
20 points: Credible scholarly sources are used to give compelling evidence to support claims and are clearly and fairly represented. APA 6th Edition format is used accurately and consistently. The student uses above the maximum required references in the development of the assignment. |
| Grammar (worth maximum of 20% of total points) |
Zero points: Student failed to submit the final paper. |
5 points out of 20: The paper does not communicate ideas/points clearly due to inappropriate use of terminology and vague language; thoughts and sentences are disjointed or incomprehensible; organization lacking; and/or numerous grammatical, spelling/punctuation errors |
10 points out 20: The paper is often unclear and difficult to follow due to some inappropriate terminology and/or vague language; ideas may be fragmented, wandering and/or repetitive; poor organization; and/or some grammatical, spelling, punctuation errors |
15 points out of 20: The paper is mostly clear as a result of appropriate use of terminology and minimal vagueness; no tangents and no repetition; fairly good organization; almost perfect grammar, spelling, punctuation, and word usage. |
20 points: The paper is clear, concise, and a pleasure to read as a result of appropriate and precise use of terminology; total coherence of thoughts and presentation and logical organization; and the essay is error free. |
| Structure of the Paper (worth 10% of total points) |
Zero points: Student failed to submit the final paper. |
3 points out of 10: Student needs to develop better formatting skills. The paper omits significant structural elements required for and APA 6th edition paper. Formatting of the paper has major flaws. The paper does not conform to APA 6th edition requirements whatsoever. |
5 points out of 10: Appearance of final paper demonstrates the student’s limited ability to format the paper. There are significant errors in formatting and/or the total omission of major components of an APA 6th edition paper. They can include the omission of the cover page, abstract, and page numbers. Additionally the page has major formatting issues with spacing or paragraph formation. Font size might not conform to size requirements. The student also significantly writes too large or too short of and paper |
7 points out of 10: Research paper presents an above-average use of formatting skills. The paper has slight errors within the paper. This can include small errors or omissions with the cover page, abstract, page number, and headers. There could be also slight formatting issues with the document spacing or the font Additionally the paper might slightly exceed or undershoot the specific number of required written pages for the assignment. |
10 points: Student provides a high-caliber, formatted paper. This includes an APA 6th edition cover page, abstract, page number, headers and is double spaced in 12’ Times Roman Font. Additionally, the paper conforms to the specific number of required written pages and neither goes over or under the specified length of the paper. |
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