STA490 2020-21 Mini EDA Case Study This assessment has 3 due dates. In total, it is worth 5% of your final grade. For this Case Study, you will perform a mini exploratory data analysis (EDA) of data adapted from a STA490 project from several years ago. An overview of the research question and data collection protocol are given on the next page. You will work in an RMarkdown (.Rmd) document to conduct your EDA. As you work on your EDA, keep notes about what you are doing (and why) to help you polish your EDA report. Your final EDA report will be clearly organized and include relevant figures summarizing your exploration of the data. Your report should include the following: 1. Introduction: A brief summary of the research question and the context of the data (~200 words) 2. Data cleaning: A summary of the decisions you made when cleaning the data (~200–500 words, try to limit to about a page) 3. Preliminary insights: One key figure which provides initial insights into the research question, as clearly as possible AND a description of the plot and what it means in context. (~100–200 words) 4. Next steps: Any follow up questions, potential challenges for future analysis and a brief description of what the next steps would be (~200–300 words) Note: For this Mini Case Study, you won’t be submitting a full EDA report (i.e. you won’t be submitting investigations of all of the variables/potential relationships between variables). When you complete the full EDA for your collaborative project, you’ll be submitting a more thorough report which will include more tables/plots and accompanying descriptions and insights. Tips • Please write in full sentences. • Assume your audience is another 4th year statistics student who hasn’t seen this data or heard of the experiment before. • You may use bullet points and lists, but make sure they are clear and appropriate for what you’re explaining. The whole assessment can’t be bullet points. • Use the bolded section names above (Introduction, Data cleaning, Preliminary insights, Next steps) as headings to guide you. • We are not strictly checking word limits, but please do use the above as guides for how much to do. Evaluation for the Case Study EDA will be based on three components: 1. Create Phase: Your EDA Report You will submit your mini EDA report as a pdf document. (Note: don’t include your name in your document we want the submissions to be anonymous to the peer evaluators) 2. Assess Phase: Feedback on the EDA reports of two peers You will automatically be assigned two mini EDA reports (anonymized) submitted by your peers. After carefully reading each of these mini EDA reports, you will provide constructive feedback to your peers by answering the questions listed through the peerScholar platform. Your feedback may not be anonymous to your peers (your instructors will be able to see your name), and you will be assessed on the quality of the feedback you provide to your peers. 3. Review Phase: Reflection STA490 2020-21 After carefully reading the feedback from your peers and rating the usefulness of their feedback on a three-item scale (Not useful, Somewhat useful, Very useful), you will write 250–500 words reflecting on what you would do to make your EDA report more impactful. Note: You will do this in the ‘Revise’ section BUT YOU DO NOT HAVE TO REVISE AND RESUBMIT YOUR EDA. Just use the text area to write your reflection. Reflect on the strengths and weaknesses of your original submission, based on what you’ve seen of your classmates work and their feedback for you. You may want to comment on specific ideas for how to improve organization, appropriateness of data cleaning choices, the clarity of your written descriptions and improvements to the figure you generated. Notes: - The evaluation of your work will be based in equal parts on (1) the completeness of the mini-report you submit in the Create Phase; (2) the quality of the constructive feedback you provide for your two peers in the Assess Phase; and (3) the reflection you write about your own work in the Review Phase. - The feedback you provide in the Assess Phase will not affect your peers’ scores, just your own score. Key dates and deliverables Create Phase (pdf submission) 11:59 a.m. ET Wednesday, September 23 Submit EDA report as a pdf through Quercus (using the peerScholar interface) Assess Phase (Peer Feedback) 11:59 a.m. ET Monday, September 28 Submit through Quercus (using the peerScholar interface) Review Phase (Reflection) 11:59 a.m. ET Friday, October 2 Submit through Quercus (using the peerScholar interface) STA490 2020-21 Overview of Research Question and Data Collection Protocol Research question: Is there a diurnal (i.e. daily) pattern to reaction time? Below is the protocol which was used to collect the data Study Protocol - Test your reaction time at https://questionnaire.censusatschool.ca/practice/reaction - Each time you record your reaction time, only do the test once. - Do not do extra practice runs - On each selected day, record your reaction time at the following times: o Within one hour of waking up o 4-6 hours after the first measurement o 4-6 hours after your last measurement o Within one hour of going to bed - Use the same device for all 4 measurements - Use your dominant hand for all 4 measurements - If you need glasses or contact lenses, wear them when you measure your reaction time - Make sure you are comfortable (and in a comfortable environment) when you measure your reaction time Variables to record - Have you taken a stimulant since your last measurement (or since waking up for the first measurement of a day)? o Yes or no - How fatigued are you? o Record at the time of each measurement o Samn-Perelli 7-pt scale (see next page) - How hungry are you? o Record at the time of each measurement o 10-point hunger scale (see next page) - What is the number of this measurement? o 1, 2, 3, 4 - Were you feeling ill today? o Yes or no STA490 2020-21 Appendix Fatigue: Samn-Perelli 7-pt scale (https://www.icao.int/safety/fatiguemanagement/FRMSBangkok/4.%20Measuring%20Fatigue.pdf) 1. Fully alert, wide awake 2. Very lively, responsive, but not at peak 3. Okay, somewhat fresh 4. A little tired, less than fresh 5. Moderately tired, let down 6. Extremely tired, very difficult to concentrate 7. Completely exhausted, unable to function effectively Hunger: Hunger Scale (https://medical.mit.edu/sites/default/files/hunger-scale.pdf) 1. BEYOND HUNGRY: You may have a headache. You can’t concentrate and feel dizzy. You may have trouble with coordination. You are totally out of energy and need to lie down. This may happen during a very restrictive diet 2. You can’t seem to tolerate anything. You’re irritable and cranky and very hungry, with little energy. You may even feel nauseous. You are at the stage of being famished 3. The urge to eat is strong. You feel an emptiness in your stomach. Your coordination begins to wane 4. You start to think about food. Your body is giving you the signal that you might want to eat. You are a little hungry 5. Your body has enough fuel to keep it going and is physically and psychologically just starting to feel satisfied 6. You’re fully at the point of satisfaction 7. You’re past the point of satisfaction, yet you can still “find room” for a little more. Your body says “no” and your mind says “yes” to a few more bites. 8. You are actually starting to hurt. Maybe you shouldn’t have had more, but it tasted so good. Or did you get caught up in the eating-is-the-thing-to-do syndrome because all of the activity was centered around food? 9. The after-effects feel really uncomfortable. Maybe you didn’t eat all day to leave room for this meal and you feel heavy, tired, and bloated. You no longer feel like socializing; you’d rather be by yourself or go to bed. Did you miss out on the socializing because you felt focused on the food? 10. BEYOND FULL: This is a typical Thanksgiving Dinner feeling – you are physically miserable, don’t want to or can’t move, and feel like you never want to look at food again.
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