MATH399 Course Home Course Project (NOV14)

Project Part C: Regression and Correlation Analysis Back to Top Using Minitab perform the regression and correlation analysis for the data on diabetes posttest (Y), the

dependent variable, and diabetes pretest (X), the independent variable, by answering the following.

1. 1.Generateascatterplotfordiabetesposttest(Y)vs.diabetespretest(X)includingthegraphofthe"bestfit"line.Interpret.
2. 2. Determine the equation of the "best fit" line, which describes the relationship between diabetes posttest and diabetes pretest.
3. 3.Determine the coefficient of correlation. Interpret.
4. 4.Determine the coefficient of determination. Interpret.
5. 5.Test the utility of this regression model (use a two tail test with =.05). Interpret your results, including the p-value.
6. 6. Based on your findings in 1-5, what is your opinion about using diabetes pretest to predict diabetes postest? Explain.
7. 7. Compute the 95% confidence interval for beta-1 (the population slope). Interpret this interval. In an attempt to improve the model, we attempt to do a multiple regression model predicting diabetes posttest based on diabetes pretest and glucose.
8. 8.Using Minitab, run the multiple regression analysis using the variables diabetes pretest and glucose to predict diabetes posttest. State the equation for this multiple regression model.
9. 9. Perform the Global Test for Utility (F-Test). Explain your conclusion.
10. Perform the t-test on each independent variable. Explain your conclusions and clearly state how you should proceed. In particular, which independent variables should we keep and which should be discarded.
11. 10.Is this multiple regression model better than the linear model that we generated in parts 1-7? Explain.

Summarize your results from 1-11 in a report that is three pages or less in length and explains and interprets the results in ways that are understandable to someone who does not know statistics.

MATH399 Course Home Course Project (NOV14)

Hosp_Stay	Hosp_Satisfaction	Diab_Pretest	Diab_Posttest	Glucose
2	VeryDissat	34	39	122
3	SWDissat	33	30	116
1	SWSat	29	22	108
1	SWSat	17	14	63
7	SWDissat	69	60	74
7	VerySat	69	70	84
8	SWDissat	81	82	67
8	VerySat	81	88	57
9	SWSat	52	100	231
4	SWDissat	45	48	93
1	SWSat	38	28	76
1	VerySat	27	33	163
6	VeryDissat	45	54	217
8	SWDissat	58	71	112
7	SWDissat	68	84	107
6	SWDissat	48	49	95
1	VerySat	9	15	104
8	VerySat	50	51	63
6	SWDissat	65	51	18

6	SWDissat	64	78	53
1	VerySat	25	30	96
5	VerySat	50	45	102
2	VeryDissat	47	41	142
2	VeryDissat	24	18	133
3	VerySat	35	30	88
1	SWDissat	29	31	87
4	SWDissat	39	33	161
4	SWDissat	53	42	104
5	VeryDissat	57	49	92
4	SWSat	50	50	168
8	VeryDissat	64	100	72
6	VeryDissat	90	95	100
8	SWDissat	52	63	63
9	SWSat	52	64	132
9	VerySat	67	77	171
8	SWSat	68	68	163
5	SWSat	67	60	84
7	SWSat	44	53	102
7	VeryDissat	57	51	130
3	SWSat	58	50	71

** Answer In MS Word DOC please