Simple Linear Regression
Simple Linear Regression Model
Least Squares Method
Coefficient of Determination
Model Assumptions
Testing for Significance
Using the Estimated Regression Equation
for Estimation and Prediction
Computer Solution
Residual Analysis:

Statistical Computing Methods
Worked Problem
Analysis of Variance
1. An economist compiled data on productivity improvements last year for
a sample of firms producing electronic computing equipment. The firms
were classified according to the level of thei

Worked Example: Simple Linear Regression
1. The following table shows the hours of sunshine, x, during 5 days in August and
the number of ice creams, y, sold by a beach shop.
X
0
1
2
3
4
y
4
6
7
8
10
(a) Plot the data. Graph the best fitted line on the sc

Computational Statistical Methods
Worked Problem
Testing Independence
(1)
The president of a large company has been studying the relationship
between male/female supervisory structures in his institution and the level of
employees' job satisfaction. The r

Computational Statistical Methods
Worked Problems
Testing Equal Variances
(1) A major issue facing many states is whether to legalize casino. The
data below shows samples of annual salaries (in thousands of
dollars) for accountants in two different firms.