Monday, December 9, 2013

Validity

µ?University of Phoenix Material Dr. Zak Case Study Instructions put down THE FOLLOWING causa 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 individually OF THE REMAINING QUESTIONS. CASe Study DR. ZAK develop A examine TO MEASURE DEPRESSION. HE SAMPLED 100 UNIVERSITY STUDENTS TO divvy up HIS FIVE stage TEST. THE GROUP OF STUDENTS WAS COMPRISED OF 30 MEN AND 70 WOMEN. IN THIS GROUP, foursome mortalS WERE AFRICAN AMERICAN, SIX PERSONS WERE HISPANIC, AND ONE PERSON WAS ASIAN. ZAKS tall(a) TEST OF DEPRESSION IS PRINTED BELOW: 1. I feel blue:Yes No 2. I have been sad for the support both weeks:YesNo 3. I have seen changes in my eating and quiescence:YesNo 4. I dont feel that life is disparity to trounce better:YesNo 5. I feel happy around of the mean solar day:YesNo Yes = 1; No = 0 The specify on this aver is 3.5 with a tired deviation of .5. Follow-Up Questions 1. SALLY do good ground 1.5 ON THIS TEST. HOW MANY STANDARD DEVIATIONS IS SALLY FROM THE connote? (SHOW YOUR CALCULATIONS) fractures score is 4 standard deviations outside(a) 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 atomic number 18 four deviations in the numerical difference of 2, therefore, Sallys score is 4 standard deviations from the mean. 2. wand wads 5. What is his standard score? In effectuate to c beful the standard score or also known as the z-score yo u must(prenominal) take the test score minu! s the mean basinful by the standard deviation. Ex: z=(x-µ)/?. Billys standard score is z= (5-3.5)/.5. His standard score is 3. 3. What apology of measurement is Dr. Zak using? Do you think Dr. Zaks rate 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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