bis_104_mid_exam_i__key_082

bis_104_mid_exam_i__key_082 - BIS 104-001 Fall, 2008 Name _...

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BIS 104-001 Name ______________________________ Fall, 2008 (last) (first) Exam #: _____ INSTRUCTIONS: 1. Print your name at the top of each page. 2. This exam consists of 8 questions on 6 pages worth a total of 60 points. Point values are given in parentheses. Make sure that you have a complete exam. 3. Write your answers to all questions in the spaces provided. 4. Write clearly; illegible answers will receive a score of zero. 5. Please read and sign the statements below: Authorization for public distribution _____ I authorize the return of my exam for pickup in a class bin or by general distribution during class. _____ I do not authorize the public return of my exam (if you choose this option you will pick up your exam from the instructor). Signature __________________________ Date ______________
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Honor Code Statement My signature below affirms that I wrote this exam in the spirit of the honor system of UCD. I neither received nor furnished any help during the exam. Signature __________________________ Page 3 Name ________________________ 5. We have discussed extensively the concept of the “Rules of Evidence”, defined as the three distinct categories of experimental evidence that are used together to support a particular conclusion. Identify and provide a brief (1 or 2 sentences) definition of each of these three types of experimental evidence. (12 pts) a) Plausibility: Observations and/or measurements that provide a correlation between two variables. These measurements establish whether the variable of interest is present at the right time and place, and in sufficient quantity to possibly cause an event, though no cause and effect is proven (circumstantial evidence) “Find it”
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b) Necessity: Loss-of-function type of experiments that involve the removal, inhibition, or blocking of a single variable to determine whether its presence or activity is required to cause an event. “Lose it”. c) Sufficiency: Gain-of-function type of experiments that involve inducing the activity of a variable at an abnormal time or place to see if that variable, acting alone, is capable of directly causing a particular event. “Move it”. Which one of these 3 categories by itself provides the weakest type of evidence? (1 pts) Plausibility.
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Why is the category you have chosen considered to be the weakest of the three? (1 pts) Plausibility is weakest because it provides only correlative, circumstantial evidence, not a direct proof of cause and effect. Page 4
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This note was uploaded on 03/15/2010 for the course BIS BIS 104 taught by Professor Privalsky during the Fall '09 term at UC Davis.

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bis_104_mid_exam_i__key_082 - BIS 104-001 Fall, 2008 Name _...

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