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PSYC354_HW3G(1).docx

PSYC354_HW3G(1).docx - PSYC 354 HOMEWORK 3 Central Tendency...

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PSYC 354 H OMEWORK 3 Central Tendency and Variability When submitting this file, be sure the filename includes your full name, course and section. Example: HW3_JohnDoe_354B01 Be sure you have reviewed this module/week’s lesson and presentations along with the practice data analysis before proceeding to the homework exercises. Complete all analyses in SPSS, then copy and paste your output and graphs into your homework document file. Answer any written questions (such as the text-based questions or the APA Participants section) in the appropriate place within the same file. Part I: Concepts Questions 1–7 Questions 1-3 Fill in the highlighted blanks to answer/complete the statements. 1 ) The name for the middle score in a sample when the scores are arranged in ascending order is the __median______ . 2) What is the letter that represents the total number of scores in a sample? _M___ 3 ) According to the text and presentation, which measure of central tendency is most likely to be negatively affected by outliers? _Mean_______ Question 4a-4b These are the scores of eleven patients on the Beck Depression Inventory (BDI ® ). Scores can range from 0 to 63. 4-a) What is the mean of the scores? (Compute this using a calculator): Answer 24 Page 1 of 11 1 0 19 6 8 14 16 26 25 54 12 20
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PSYC 354 4-b) What is the median of these scores? Answer 16 Question 5a- 5e At this website , (http://projects.newyorker.com/story/subway/) you will find an interactive graph concerning New York City’s geography and income. Read the introduction and click on different “subway lines” to see how the interactive graph works. Note that the abbreviations stand for the four different boroughs: MAN = Manhattan BRX = Bronx BRK = Brooklyn QNS = Queens Also note that hovering your mouse over the dots on the graph displays the subway stop and the median income of households in that area. 5-a) Click on Line 7 . In which of the boroughs shown is the median household income highest ? AnswerManhattan, Gand Central – 42 st 5-b) Stay on Line 7 . In the borough of Queens (QNS), which subway stop is an outlier compared to the rest of the stops in the area? Explain why this stop would be considered an outlier. Subway Stop: Mets- Willet Points Explanation:All other stops are below the $100,000 median income 5-c) Click on Line 2 . Of the 3 boroughs shown, which borough shows the least variability in median household income?
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