It is often not possible or practical to study an entire population, so researchers draw samples from which they make inferences about a population of interest. In quantitative research, where generalization to a population is typically valued, a researcher’s ability to make such inferences is only as good as the sampling method she or he uses to obtain the sample. Although generalization is typically not a goal in qualitative research, sampling is no less important. Indeed, for quantitative, qualitative, and mixed methods research, sampling is a critical aspect of the research process.With a sampling strategy in mind, attention then turns to collecting data from the sample. Specific methods of data collection produce specific types of data that will answer particular research questions, but not others; so here, too, as covered in previous weeks, the research questions inform the type of data that are needed (numerical or non-numerical) and how the data will be obtained (e.g., interviews, experiments, document analysis, surveys, observations).For this Discussion, you will consider sampling strategies. You will also explore the strengths and limitation of various methods of data collection and their ethical implications. Last, you will consider measurement reliability and validity in the context of your discipline.With these thoughts in mind,if your last name starts with A through L, use Position A. If your last name starts with M through Z, use Position B.Position A: Probability sampling represents the best method for selecting research participants.Position B: Nonprobability (or purposive) sampling represents the best method for selecting research participants.Write a restatement of your assigned position. Defend your position with examples and support from the scholarly literature. Next, select a method of data collection and briefly explain its strengths and limitations. Then, identify a potential ethical issue with this method and describe a strategy to address it. Last, explain the relationship between measurement reliability and measurement validity using examples from your discipline.Be sure to support your Main Issue Post and Response Post with reference to the week’s Learning Resources and other scholarly evidence in APA Style.ReadingsJournal Article:Teddlie, C., & Yu, F. (2007). Mixed methods sampling: A typology with examples.Journal of Mixed Methods Research, 1(1), 77–100. doi: 10.1177/2345678906292430Retrieved from the Walden Library databases.Journal Article:Onwuegbuzie, A. J., & Collins, K. M. (2007). A typology of mixed methods sampling designs in social science research.The Qualitative Report, 12(2), 281–316. Retrieved fromhttp://nsuworks.nova.edu/tqr/vol12/iss2/9Journal Article:Drost, E. A. (2011). Validity and reliability in social science research.Education Research and Perspectives, 38(1), 105–124.Retrieved from the Walden Library databases.Website:Walden University: Center for Research Quality. (2015a). Data resources & support: Home. Retrieved fromhttp://academicguides.waldenu.edu/researchcenter/dataresourcesDownload the “Sources of Data for Research: A Research Primer” document.Website:Walden University: Center for Research Quality. (2015d). Research resources: Walden University participant pool. Retrieved fromhttp://academicguides.waldenu.edu/researchcenter/resources/participantpoolWebsite:Walden University. (2015a). How do I find an article that reports on research that uses a specific methodology? Retrieved fromhttp://academicanswers.waldenu.edu/faq/72633Website:Walden University: Writing Center. (2015). Common course assignments: Annotated bibliographies. Retrieved fromhttp://academicguides.waldenu.edu/writingcenter/assignments/annotatedbibliographiesMediaPrice, S. (2015). Annotated bibliographies [Online webinar]. Retrieved fromhttps://waldencss.adobeconnect.com/p7d6uqxv8g3?launcher=false&fcsContent=true&pbMode=normal

Make sure you do this paper as a case/social worker prospective. APA style use credible sources as usual.

See textbook end of chapter 3 Focus on Mise-en-Scène: Psycho NOTE: Students must post before seeing replies. Let’s look at how various design elements work together in a single image from an early scene in Alfred Hitchcock’s 1960 suspense film Psycho. This shot is from an encounter between Norman Bates, the lonely psychopath and proprietor of a motel that has seen better days, and Marion crane, an unlucky guest who will soon be killed by Norman. The scene is set in the parlor adjoining the motel office where the two meet for a snack; they discuss Norman’s hobby, taxidermy. It seems at first an innocuous little conversation between a shy young man and an attractive woman who is clearly out of his league. But there is more to this little conversation than meets the eye, as implied by the mise-en-scène. A close reading of this shot tells us a lot about Norman and foreshadows his next, rather unhappy encounter with Marion in the bathroom of her motel room.https://ng.cengage.com/static/nb/ui/evo/index.html?deploymentId=5677062231652711641112541260&eISBN=9781305410404&id=475406768&nbId=1159050&snapshotId=1159050& (Links to an external site.) (Links to an external site.) DISCUSSION QUESTION Choose one still from the film, Psycho, and upload the still for us to see and analyze the basic elements of the mise-en-scène.  Use the questions below to analyze how the basic elements of mise-en-scène contribute to the visual style and story content of a film. For a close analysis, it is best to pick a single image. Begin by thinking about the overall effect of the mise-en-scène in the image. What do you learn about the story and characters—without the use of dialogue? What emotional effect does the mise-en-scène have on you?  Now, focus on ONE area below and discuss (the set, costume/makeup/hair, blocking and performance, or lights). 3-1 The Set Take note of the interior and exterior architecture, furnishings, and props in the scenes.What larger location for the story is suggested by these elements?What time period is evoked?What does the set tell you about the characters’ personal lives and interests, working conditions, or social and economic status?Does the set design represent an imaginary place and, if so, how might this be connected to a larger creative argument?Is the set deliberately theatrical or artificial, and why?Are there any key props in the scene, and how are they used? Do they provide clues to the action or have symbolic meaning? 3-2 Costumes, Makeup, and Hair If you are familiar with the off-screen look of the actors in this scene, how have they been transformed by wardrobe, makeup, and hair?What can you tell about a character’s social standing, occupation, and attitude toward life from his or her appearance?Does the character change over the course of the film, and what role does costume, makeup, and hair play in commenting on this transformation? 3-3 Blocking and Performance Where are the characters sitting or standing in relationship to one another? What does this positioning tell you?If the characters move around the scene, what meanings do those movements convey?Does one character visually dominate the scene?Do any of the human figures function purely as design elements in the scene? If so, what role do they play in the larger meaning of the scene? 3-4 The Lights Does the lighting direct your eyes to a certain figure or object?Has the filmmaker used under lighting or top lighting to dramatic effect?Are there sharp contrasts between light and dark areas in the frame?Is a character shown in hard or in soft light?Does the scene appear to have been shot in natural light, and is that choice an aspect of the film’s meaning?