Brokerage Trade Price Speed of Execution Satisfaction Electronic Trades Scottrade, Inc. 3.4 3.4 3.5
Charles Schwab 3.2 3.3 3.4
Fidelity Brokerage Services 3.1 3.4 3.9
TD Ameritrade 2.9 3.6 3.7
E*Trade Financial 2.9 3.2 2.9
(Not listed) 2.5 3.2 2.7
Vanguard Brokerage Services 2.6 3.8 2.8
USAA Brokerage Services 2.4 3.8 3.6
Thinkorswim 2.6 2.6 2.6
Wells Fargo Investments 2.3 2.7 2.3
Interactive Brokers 3.7 4 4
Zecco. com 2.5 2.5 2.5
Firstrade Securities 3 3 4
Banc of America Investment Services4 1 2
Is the overall regression significant, and what proves that it is or is not?
Are the two independent variables (X1 and X2) significant or not?
What is the estimated regression equation?