ratings data quality of the speed of execution and overall satiSraction with electronic trades ession provided tne estimated regre equation = 0.5675 + 0.8206z (AAII website). Brokerage Speed Satisfaction Scottrade, Inc. 2.7 2.2 Charles Schwab 3.6 3.2 Fidelity Brokerage Services 3.1 3.2 TD Ameritrade 2.8 2.9 E*Trade Financial 3.5 3.8 Vanguard Brokerage Services 2.4 2.7 USAA Brokerage Services 3.8 3.3 Thinkorswim 3.7 3.7 Wells Fargo Investments 2.7 2.8 Interactive Brokers 3.5 3.8 Zecco.com 3.0 3.2 At the 0.05 level of significance, test whether speed of execution and overall satisfaction are related. Show the ANOVA table. What is your conclusion? Source Sum of Squares Degrees Mean Square p-value of Variation (to 4 decimals) of Freedom (to 4 decimals) (to 2 decimals) (to 4 decimals) Regression Error Total
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.
In the table below ratings data on x= the quality of the speed of execution and y= overall satisfaction with electronic trades provided the estimated regression equation y = 0.5675 + 0.8206x (AAII website).
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