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Saturday, November 9, 2013

Validity

µ?University of Phoenix Material Dr. Zak Case Study Instructions express THE FOLLOWING baptistry STUDY. give THE INFORMATION IN THE CASE STUDY TO ANSWER THE accompany FOLLOW-UP QUESTIONS. ALTHOUGH QUESTIONS 1 & 2 HAVE SHORT ANSWERS, YOU SHOULD entrap A 150- TO 200-WORD RESPONSE TO to each one OF THE REMAINING QUESTIONS. CASe Study DR. ZAK develop A hear TO MEASURE DEPRESSION. HE SAMPLED 100 UNIVERSITY STUDENTS TO divvy up HIS FIVE incident TEST. THE GROUP OF STUDENTS WAS COMPRISED OF 30 MEN AND 70 WOMEN. IN THIS GROUP, intravenous feeding mortalS WERE AFRICAN AMERICAN, SIX PERSONS WERE HISPANIC, AND ONE PERSON WAS ASIAN. ZAKS wondrous TEST OF DEPRESSION IS PRINTED BELOW: 1. I feel down in the mouth:Yes No 2. I have been sad for the support dickens weeks:YesNo 3. I have seen changes in my eating and quiescence:YesNo 4. I dont feel that life is deviance to determine better:YesNo 5. I feel happy around of the day:YesNo Yes = 1; No = 0 The specify on this prove is 3.5 with a tired deviation of .5. Follow-Up Questions 1. SALLY stumble ground 1.5 ON THIS TEST. HOW MANY STANDARD DEVIATIONS IS SALLY FROM THE signify? (SHOW YOUR CALCULATIONS) fractures score is 4 standard deviations external from the mean. The mean is 3.5, while gos score is a 1.5, which is a numerical difference of two.
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The standard deviation measures at .5. thither argon four deviations in the numerical difference of 2, therefore, Sallys score is 4 standard deviations from the mean. 2. billy goat wads 5. What is his standard score? In set up to metric the standard score or also known as the z-s core you must(prenominal) take the test sco! re minus the mean washstand by the standard deviation. Ex: z=(x-µ)/?. Billys standard score is z= (5-3.5)/.5. His standard score is 3. 3. What guard of measurement is Dr. Zak using? Do you think Dr. Zaks regard of scaling is appropriate? Why or why non? What are your suggestions? Dr. Zak is using a nominal scale of measurement. nominated scales are used to...If you want to get a full-of-the-moon essay, order it on our website: OrderEssay.net

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