data analysis related subject
Fill in the blanks: Researchers at a trauma center wished to develop a program to help brain-damaged trauma victims regain an acceptable level of independence. An experiment involving 72 subjects with the same degree of brain damage was conducted. The objective was to compare different combinations of psychiatric treatment and physical therapy. Each subject was assigned to one of 24 different combinations of four types of psychiatric treatment and six physical therapy programs. There were three subjects in each combination. The response variable is the number of months elapsing between initiation of therapy and time at which the patient was able to function independently. The results were as follows: Physical Psychiatric Treatment Therapy Program B C D 11.0 9.1 12.5 13.2 9.6 9.6 11.5 13.2 10.8 9.6 10.5 13.5 10.5 10.8 10.5 15.0 11.5 10.5 11.8 14.6 12.0 10.5 11.5 14.0 12.0 11.5 11.8 12.8 III 11.5 11.5 11.8 13.7 11.8 12.3 12.3 13.1 11.5 9.4 13.7 14.0 IV 11.8 9.1 13.5 15.0 10.5 10.8 12.5 14.0 11.0 11.2 14.4 13.0 V 11.2 11.8 14.2 14.2 10.0 10.2 13.5 13.7 11.2 10.8 11.5 11.8 VI 10.8 11.5 10.2 12.8 11.8 10.2 11.5 12.0 a. What experimental design is most appropriate to use? b. What are the factors considered? C. How many levels are there per factor? d. What is the response variable?Fill in the blanks; A remotivation team in a psychiatric hospital conducted an experiment to compare five methods for remotivating patients. Patients were grouped according to level of initial motivation. Patients in each group were randomly assigned to the ve methods. At the end of the experimental period the patients were evaluated by a team composed of a psychiatrist, a psychologist. a nurse, and a social worker, none of whom was aware of the method to which patients had been assigned. The team assigned each patient a composite score as a measure of his or her level of motivation. The results were as follows: Level of Bandit-an Method I . . l Motivation A II C D E Nil 58 68 60 63 64 Very low 62 7D 65 80 69 Low 67 78 68 81 70 Average 70 B] 70 89 '74 Do these data provide sufcient evidence to indicate a difference in mean scores among methods? a. What experimental design is most appropriate to use? | l b. What is factor being considered in the study? ' l c. How many levels are there in the given factor? ' l Fill in the blanks: In a study by Wang et al. (A43) researchers examined bone strength. They collected to cadaveric femurs from subjects in three age groups; young (19749 years), middle-aged (5069 years); and elderly (70 years or older) [Note one value was missing in the middleaged group]. One of the outcome measures (W) was the force in newtons required to fracture the bone, The following table shows the data for the three age groups. Yul-Ill: (Y) Middle-lad (MA) Eldu'ly (E) I 93.6 I 25.4 59.0 \"7.5 I265 B12 122.0 I 15.9 84.4 I414 93.! 73.1 I 17.0 94.3 51.9 IOSA 99.9 51.1 99.9 83.3 54.7 14.0 12.! 73.6 14.4 83.5 53.7 I 12.8 96.11 Same: Kinda Wang. HID. Used with mission. a. What experimental design is most appropriate to use in the given problem? S b, How many levels are there in the given factor? ' c, What is the response variable of the given problem? ' l
