The following table gives the experience (in years) for several brokers and their number of stocks sold during the previous three months in the Egyptian stock market. Broker Experience ( in years) 4 12 9 6 10 16 7 Number of stocks 19 42 28 31 39 35 21 Determine both dependent and independent variables, and explain the expected relationship between Calculate the correlation coefficient comment on the Estimates the simple regression model and comment on the estimated

The following table gives the experience (in years) for several brokers and their number of stocks sold during the previous three months in the Egyptian stock market. Broker Experience ( in years) 4 12 9 6 10 16 7 Number of stocks 19 42 28 31 39 35 21 Determine both dependent and independent variables, and explain the expected relationship between Calculate the correlation coefficient comment on the Estimates the simple regression model and comment on the estimated

Linear Algebra: A Modern Introduction

4th Edition

ISBN:9781285463247

Author:David Poole

Publisher:David Poole

Chapter7: Distance And Approximation

Section7.3: Least Squares Approximation

Problem 31EQ

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Question Six

The following table gives the experience (in years) for several brokers and their number of stocks sold during the previous three months in the Egyptian stock market.

Broker Experience ( in years)

Number of stocks

Determine both dependent and independent variables, and explain the expected relationship between
Calculate the correlation coefficient comment on the
Estimates the simple regression model and comment on the estimated
Predict the number of stocks sold during the past three months by broker with eleven years of
Without any calculation, If independent variable is divided over 3, what will be the effect on the estimated coefficients. Justify your

Definition Definition Statistical measure used to assess the strength and direction of relationships between two variables. Correlation coefficients range between -1 and 1. A coefficient value of 0 indicates that there is no relationship between the variables, whereas a -1 or 1 indicates that there is a perfect negative or positive correlation.

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Question SixThe following table gives the experience (in years) for several brokers and their number ofstocks sold during the previous three months in the Egyptian stock market.Broker Experience( in years)4 12 9 6 10 16 7Number of stocks 19 42 28 31 39 35 211) Determine both dependent and independent variables, and explain theexpected relationship between them.2) Calculate the correlation coefficient comment on the results.3) Estimates the simple regression model and comment on the estimatedcoefficients.4) Predict the number of stocks sold during the past three months by brokerwith eleven years of experience.5) Without any calculation, If independent variable is divided over 3, whatwill be the effect on the estimated coefficients. Justify your answer.
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