Questiоn 3 Mоdel Diаgnоstics аnd Trаnsformation (19 points) Use trainData for this question a) (4 points) Perform the following model diagnostics on model2 (the full model created in Question 2b):i) Check for the linearity assumption.ii) Check for constant variance. iii) Check for normality. Note: Both a histogram and a normal QQ plot with a pointwise confidence envelope must be plotted.Explain your conclusions. b) (2 points) Based on your conclusions in Q3a, would you propose a transformation of the response variable? Explain with reasoning. c) (2 points) i) Create a linear regression model, named model4, that uses the log-transformed Savings_Rate_Percent as the response and all the predictors in trainData. Display the summary.(2 points) ii) Compare the R-squared values of model2 and model4. Did the transformation improve the explanatory power of the model? d) (3 points) Calculate the VIF of each predictor in model2. Using a VIF threshold of max(10, 1/(1-R-squared)), is multicollinearity a concern in this model? e) (3 points) Create a plot of the Cook's distances for model2. Using a threshold of 4/n, how many outliers are identified? f) i) (2 points) Create a new dataframe from trainData that excludes the outliers identified in Q3e, and fit the full model again on this dataset. Call it model_outlier. Compare the R-squared, Adjusted R-squared and Residual Standard Error of model2 and model_outlier.ii) (1 point) Why might removing outliers improve the model, but also be a questionable practice?
Cоmpоse yоur nаrrаtive essаy in the space below. Here is the assignment sheet: Essay #2: Narrative: Remembering a Significant Event Format/Length: 600 word minimum MLA heading and title for essay Include a Word Count (+1 for doing so). You must add this in “by hand.” Assignment: Think back to a particular moment that has shaped or impacted you in some way and then narrate that event from a first-person point of view. **Note the time frame: The event is a maximum of four hours of your life. One hour or less is ideal. When thinking of a topic, sometimes it is best to consider the significance first. For instance, you could write about: A time when you exceeded your own expectations for yourself—you showed a courage, a resolve, a strength that you did not know you had. A time when you let yourself down and did not meet your expectations-you revealed a character flaw or weakness and are not proud of how you acted (we learn and grow from these experiences). A moment where you saw the “true colors” of someone, for better or for worse: a moment that solidified a relationship, or that in essence dissolved it. A time when your perspective on something changed: yourself, a loved one, a family member, etc. Structure: The paper will be a five-paragraph essay that has the following: Introduction (75-150 words; no more than ¼ of essay): Convey relevant background information, anything you need to relate to set the stage for your narrative moment. It can be about your state of mind, the phase of life you were in, your relationship with others, factual information about yourself, etc. **Do not begin with your narrative action in the opening paragraph. Save that for body paragraph #1. See the sample introductions posted. In the final sentence of the introduction, transition to the event itself and suggest the significance of it. How did it alter/shape you in some way, for better or for worse? Three Body Paragraphs (150-300 words each): **The body paragraphs need to take place within a four-hour time frame. ** Any information outside that time frame will be referenced in the introduction or in the first three sentences of BP #1, acting as a transition to your specific event. One hour or less is perfect for this paper. Narrate the event chronologically. Incorporate specific detail and concrete language to vividly present your significant event. Make the reader feel as if he/she was there experiencing it with you. **Build to a key moment, a high point of action in your paper. That key moment cannot come in BP #1. This is the most important section and much of your essay should take place here: at least one and perhaps even two body paragraphs. The key moment needs to be described vividly. Convey a sense of significance, either with the key moment, in a body paragraph after the key moment, or in the conclusion. Conclusion (75-150 words): Contemplate the impact the event has had upon you. Offer closure to the event. Guidelines: First and foremost, your job to clearly convey a narrative event. The essay must have an orderly progression and be rich in concrete detail and sensory imagery. Make sure to have a specific moment that you convey in your body paragraphs; anything that takes more than a few hours to unfold is not suitable for this paper. Try to isolate a few minutes of your life that have made an impact upon you. Pick and choose what details to include. You cannot and should not describe everything. You must not only create the external world of the paper but the internal world; it is crucial for you to catalog your thoughts and feelings about this event in your composition and to convey the tone of the essay. The sense of why the event is significant should come through in the paper. What did you realize at that moment? The essay is building to the key moment. That is the most important section of the paper and should be narrated in detail. Establish a clear point of view by using first-person narration (the “I” perspective); this event is your unique experience. Required**: You must incorporate some external dialogue and/or interior monologue. Both will add realistic detail to your essay. Do not overuse dialogue, however. **Use past tense to convey this narrative event. Grammar, spelling, punctuation all count in the final evaluation of the paper. Please edit and proofread carefully. Above all, “to thine own self be true.” This narrative must be honest, real, authentic. Do not write about: receiving the news of someone’s death graduation a car accident a religious conversion a heavy sex scene a felony crime
The nurse is prоviding educаtiоn tо аn older аdult who lives in a cold climate. What recommendation would you provide to the patient to help the client prevent hypothermia? (Provide one educational teaching point.)