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*Question:* The American Association of Individual
Investors (AAII) On-Line Discount Broker Survey polls memb...

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The American Association of Individual Investors (AAII) On-Line Discount Broker Survey polls members on their experiences with discount brokers. As part of the survey, members were asked to rate the quality of the speed of execution with their broker as well as provide an overall satisfaction rating for electronic trades. Possible responses (scores) were no opinion (0), unsatisfied (1), somewhat satisfied (2), satisfied (3), and very satisfied (4). For each broker summary scores were computed by calculating a weighted average of the scores provided by each respondent. A portion of the survey results follow (AAII website, February 7, 2012).

Brokerage | Speed of execution | Satisfaction |

Scottrade, Inc. | 3.4 | 3.5 |

Charles Schwab | 3.3 | 3.4 |

Fidelity Brokerage Services | 3.4 | 3.9 |

TD Ameritrade | 3.6 | 3.7 |

E*Trade Financial | 3.2 | 2.9 |

We want to predict "Satisfaction" using "Speed of execution".

Question: Suppose that a broker named wells Fargo Investments has an execution speed of 2.7. What is your prediction for the expected satisfaction for this broker?

Answer #1

y = −2.973 + 1.909⋅ 2.7

y = 8.1273

The American Association of Individual Investors (AAII) On-Line
Discount Broker Survey polls members on their experiences with
discount brokers. As part of the survey, members were asked to rate
the quality of the speed of execution with their broker as well as
provide an overall satisfaction rating for electronic trades.
Possible responses (scores) were no opinion (0), unsatisfied (1),
somewhat satisfied (2), satisfied (3), and very satisfied (4). For
each broker summary scores were computed by calculating a weighted
average...

The American Association of Individual Investors (AAII) On-Line
Discount Broker Survey polls members on their experiences with
discount brokers. As part of the survey, members were asked to rate
the quality of the speed of execution with their broker as well as
provide an overall satisfaction rating for electronic trades.
Possible responses (scores) were no opinion (0), unsatisfied (1),
somewhat satisfied (2), satisfied (3), and very satisfied (4). For
each broker summary scores were computed by calculating a weighted
average...

The American Association of Individual Investors (AAII) On-Line
Discount Broker Survey polls members on their experiences with
discount brokers. As part of the survey, members were asked to rate
the quality of the speed of execution with their broker as well as
provide an overall satisfaction rating for electronic trades.
Possible responses (scores) were no opinion (0), unsatisfied (1),
somewhat satisfied (2), satisfied (3), and very satisfied (4). For
each broker summary scores were computed by calculating a weighted
average...

A some association On-Line Discount Broker Survey polls members
on their experiences with discount brokers. As part of the survey,
members were asked to rate the quality of the speed of execution
with their broker as well as provide an overall satisfaction rating
for electronic trades. Possible responses (scores) were no opinion
(0), unsatisfied (l), somewhat satisfied (2), satisfied (3), and
very satisfied (4). For each broker summary scores were computed by
calculating a weighted average of the scores provided...

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