PSYCH625 WEEK 1 PSYCHOLOGY/STATISTICS NEED HELP – Assignment Help Online Collections

PSYCH625 WEEK 1 PSYCHOLOGY/STATISTICS NEED HELP – Assignment Help Online Collections

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Time to Practice – Week OneComplete both Part A and Part B below.Part ASome questions in Part A require that you access data from Statistics for People Who (Think They) Hate Statistics. This data is available on the student website under the Student Test Resources link.1.     By hand, compute the mean, median, and mode for the following set of 40 reading scores:SUMMARY313243422434254423432436254123281421241725234421132623321226144214315212234232342.     Compute the means for the following set of scores saved as Ch. 2 Data Set 3 using IBM®SPSS® software. Print out a copy of the output.Hospital size (number of beds)Infection rate (per 1,000 admissions)2341.72142.41653.14365.64324.93425.32765.61871.25123.35534.13.     You are the manager of a fast food store. Part of your job is to report which special is selling best to the boss at the end of each day. Use your knowledge of descriptive statistics and write one paragraph to let the boss know what happened today. Use the following data. Do not use IBM®SPSS®software to compute the statistics needed; rather, do it by hand. Include a copy of your work.Special numberSoldCostHuge Burger20$2.95Baby Burger18$1.49Chicken Littles25$3.50Porker Burger19$2.95Yummy Burger17$1.99Coney Dog20$1.99Total specials sold1194.     Suppose you are working with a data set that has some different (much larger or much smaller than the rest of the data) scores. What measure of central tendency would you use and why?5.     For the following set of scores, compute the range, the unbiased and the biased standard deviations, and the variance. Do the exercise by hand.31, 42, 35, 55, 54, 34, 25, 44, 35Why is the unbiased estimate greater than the biased estimate?6.     Use IBM®SPSS®software to compute all the descriptive statistics for the following set of three test scores over the course of a semester. Which test had the highest average score? Which test had the smallest amount of variability?Test 1Test 2Test 35050494849475151514646554948554853454949474952455048465055537.     This practice problem uses the data contained in the file named Ch. 3 Data Set 3. There are two variables in this data set.VariableDefinitionHeightHeight in inchesWeightWeight in poundsUsing IBM®SPSS®software, compute all of the measures of variability you can for height and weight.8.     Review the following frequency distribution. Create a histogram either by hand or by using some other application such as a Microsoft®Excel®document.Class intervalFrequency90–1001280–891470–792060–692450–592840–492930–392120–291510–19170–9129.     A third-grade teacher is looking to improve her students’ level of engagement during group discussions and instruction. She keeps track of each of the 15 third graders’ number of responses every day for 1 week. This information is available in Ch. 4 Data Set 2. Use IBM®SPSS®software to create a bar chart (one bar for each day).10.  Identify whether these distributions are negatively skewed, positively skewed, or not skewed at all, and why.a.     This talented group of athletes scored very high on the vertical jump task.b.    On this incredibly crummy test, everyone received the same score.c.     On the most difficult spelling test of the year, the third graders wept as the scores were delivered.11.  For each of the following, indicate whether you would use a pie, line, or bar chart, and why.a.     The proportion of freshmen, sophomores, juniors, and seniors in a particular universityb.    Change in GPA over four semestersc.     Number of applicants for four different jobsd.    Reaction time to different stimulie.     Number of scores in each of 10 categoriesFrom Salkind (2011). Copyright © 2012 SAGE. All Rights Reserved. Adapted with permission.Part BComplete the questions below. Be specific and provide examples when relevant.Cite any sources consistent with APA guidelines.QuestionAnswerSalkind (2011) describes statistics as a “set of tools” (p. 18). How do behavioral scientists use those tools?How would you use descriptive statistics to report the effectiveness of a baseball team? How would you use inferential statistics to report the effectiveness of a baseball team? In this example, what is the sample and what is the population?What does a measure of central tendency tell us about a data set? Identify the three common measures of central tendency used in descriptive statistics and give an example of each. How do you calculate them?What is variability in a data set? Identify three measures of variability used in descriptive statistics, explain how to calculate each, and give an example of each.University of Phoenix MaterialBasic Concepts in StatisticsComplete the following questions. Be specific and provide examples when relevant.Cite any sources consistent with APA guidelines.QuestionAnswerWhat are statistics and how are they used in the behavioral sciences? Your answer should be 100 to 200 words.Differentiate between descriptive and inferential statistics. What information do they provide? What are their similarities and differences? Your answer should be 250 to 400 words.What is a population? What is a sample? How are they similar and how are they different? When would you use one or the other? Your answer should be 250 to 400 words.Complete the following problem:Go to the library and find a journal article in your area of interest that contains empirical data, but does not contain any visual representation of the data. Use the data to create a chart. Specify what type of chart you are creating, and why you chose the one you did. You can create the chart manually or using IBM® SPSS® software or a Microsoft® Excel® document. The chart may be pasted into this document or submitted as an attachment with this document.From Salkind (2011), p. 75. Copyright © 2012 Pearson Education. All Rights Reserved. Adapted with permission.

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