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Ethical Dilemma. Week 5: INTRO Dilemma: http://onlineacademics.org/CA517/Ethics.htm#5 INPUT Read and discuss Park information http://www.park.edu/support/ethics.asp. Week 5: Just Hard Work! Chapter 11. Statistics: Purpose, Approach, Method. SEB - Hard Work.
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Ethical Dilemma • Week 5: • INTRO Dilemma:http://onlineacademics.org/CA517/Ethics.htm#5 • INPUT Read and discuss Park information http://www.park.edu/support/ethics.asp Just Hard Work! Unit 5, CA 517
Week 5: Just Hard Work! Chapter 11. Statistics: Purpose, Approach, Method. SEB - Hard Work http://inlinethumb28.webshots.com/5979/2053349690104237032S425x425Q85.jpg http://www.bakfiets-en-meer.nl/wp-content/uploads/2009/03/elyse-sewell-china-styrofoam1.jpg Just Hard Work! Unit 5, CA 517
Test or scale • Most used method in the behavioral sciences for collecting data. • Goal is objectivity. • Scientific objectivity involves agreement between expert judges. • Methods of observation and data collection have different degrees of objectivity. http://www.ananova.com/images/web/951215.jpg Just Hard Work! Unit 5, CA 517
Test http://static.panoramio.com/photos/original/1596727.jpg • is a systematic procedure to determine the behavior of individuals. Just Hard Work! Unit 5, CA 517
Scale • Set of symbols or numerals constructed in a way such that these numerals or symbols can be assigned to individuals using some rule. • Can be divided into three types: Agreement-Disagreement Rank order Forced -choice http://www.traveladventures.org/continents/asia/images/bicycles2.jpg Just Hard Work! Unit 5, CA 517
The research should take the time to determine if a test already exists for the study. • There are a number of published and unpublished sources for tests. • A new test should be created only if no test exists for the researcher's purpose. Just Hard Work! Unit 5, CA 517 http://www.asianews.it/files/img/CHINA_Bicycle.jpg
Significance • The basic principle behind the use of statistical tests of significance is to compare obtained (observed, empirical) results to chance expectations. http://farm1.static.flickr.com/221/522783243_1de51660f3.jpg Just Hard Work! Unit 5, CA 517
Four purposes of statistics are to 1. reduce data to manageable and understandable forms 2. aid in the study of populations and samples 3. aid in decision making 4. aid in making reliable inferences from samples to populations. http://farm4.static.flickr.com/3368/3512797600_2e63d10da5.jpg Sample Just Hard Work! Unit 5, CA 517
Law of large numbers • The law of large numbers states that the larger the sample, the closer the sample value approaches the true (population) value. Continue with 6b. http://www.huffingtonpost.com/huff-wires/20080707/china-bicycle-kingdom/images/a84bbc7a-cb87-43bc-a743-823a323529c9.jpg Just Hard Work! Unit 5, CA 517