Treating Chronic Fatigue Syndrome: Patients with chronic fatigue syndrome were tested, and then retested after being treated with fludrocortisones. Listed below are the changes in fatigue after the treatment (based on data from “The Relationship Between Neurally Mediated Hypotension and the Chronic Fatigue Syndrome” by Bou-Holaigah, Rowe, Kan, and Calkins, Journal of the American Medical Association, 274, No. 12). A standard scale from -7 to +7 was used, with positive values representing improvements. Use a 0.05 significance level to test the claim that the mean change is not zero. Does the treatment appear to be effective? 6 5 0 5 6 7 3 3 2 6 5 5 0 6 3 4 3 7 0 4 4 Hypotheses: __________________________________________________________________________________ P-value: ____________________ Conclusion on null hypothesis: Conclusion on claim and answer to the question:
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.
- Treating Chronic Fatigue Syndrome: Patients with chronic fatigue syndrome were tested, and then retested after being treated with fludrocortisones. Listed below are the changes in fatigue after the treatment (based on data from “The Relationship Between Neurally Mediated Hypotension and the Chronic Fatigue Syndrome” by Bou-Holaigah, Rowe, Kan, and Calkins, Journal of the American Medical Association, 274, No. 12). A standard scale from -7 to +7 was used, with positive values representing improvements. Use a 0.05 significance level to test the claim that the
mean change is not zero. Does the treatment appear to be effective?
6 5 0 5 6 7 3 3 2 6 5 5 0 6 3 4 3 7 0 4 4
Hypotheses: __________________________________________________________________________________
P-value: ____________________
Conclusion on null hypothesis:
Conclusion on claim and answer to the question:
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