The VA has collected the past month’s data from sixteen hospitals. The VA believed the selected hospitals were efficiently run. The objective is to derive a model based on the efficient hospitals to use to comparatively evaluate questionable hospitals. The data are: y = monthly labor spent x1 = monthly X-ray exposures x2 = monthly occupied bed days x3 = average number of days of a patient’s stay SUMMARY OUTPUT Regression Statistics Multiple R 0.9981 R Square 0.9961 Adjusted R2 0.9952 Standard Error 387.1598 Observations 16 ANOVA df SS MS 14896.25 15896.25 16009.25 16896.25 17986.25 The previous multiple regression model is significant to what level? It is not significant 0.05 0.01 0.001 0.0000 In the VA prolem which is the most significant independent variable? X-ray BedDays Length of stay
Correlation
Correlation defines a relationship between two independent variables. It tells the degree to which variables move in relation to each other. When two sets of data are related to each other, there is a correlation between them.
Linear Correlation
A correlation is used to determine the relationships between numerical and categorical variables. In other words, it is an indicator of how things are connected to one another. The correlation analysis is the study of how variables are related.
Regression Analysis
Regression analysis is a statistical method in which it estimates the relationship between a dependent variable and one or more independent variable. In simple terms dependent variable is called as outcome variable and independent variable is called as predictors. Regression analysis is one of the methods to find the trends in data. The independent variable used in Regression analysis is named Predictor variable. It offers data of an associated dependent variable regarding a particular outcome.
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The VA has collected the past month’s data from sixteen hospitals. The VA believed the selected hospitals were efficiently run. The objective is to derive a model based on the efficient hospitals to use to comparatively evaluate questionable hospitals. The data are: y = monthly labor spent x1 = monthly X-ray exposures x2 = monthly occupied bed days x3 = average number of days of a patient’s stay
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14896.25 |
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15896.25 |
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16009.25 |
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16896.25 |
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17986.25 |
The previous multiple regression model is significant to what level?
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It is not significant |
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0.05 |
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0.01 |
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0.001 |
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0.0000 |
In the VA prolem which is the most significant independent variable?
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X-ray |
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BedDays |
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Length of stay |
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