Regression, Applied Statistics

The 4 assumptions of regression:

1.       Variables are normally distributed

2.       Linear relationship between the independent and dependent variables

3.       Homoscedasticity

4.       Variables are measured without error

Multiple Regression Model

Y = β0 - β1x1 + β2x2 - β3x3 + ε (error)

The regression equation is

wfood = 0.378 - 0.00120 totexp - 0.000076 income + 0.00167 age + 0.0295 nk

The above is a Multiple Regression Equation which indicates that there are two or more variables involved. Y in this case is known as wfood which is the dependant variable; however x is known as totexp, income, nk, age which are the independent variables.  In the regression equation the coefficient is the slope of line and standard error coefficient informs how far off the coefficient is from its actual figure.

Predictor         Coef           SE Coef          T           P       VIF

Constant      0.37794        0.01369        27.61  0.000

totexp        -0.00119745   0.00006058  -19.77 0.000  1.272

income       -0.00007625   0.00004302   -1.77  0.077  1.282

age             0.0016660     0.0003076     5.42    0.000  1.062

nk               0.029515       0.004765       6.19    0.000  1.005

Posted Date: 3/4/2013 4:47:38 AM | Location : United States







Related Discussions:- Regression, Assignment Help, Ask Question on Regression, Get Answer, Expert's Help, Regression Discussions

Write discussion on Regression
Your posts are moderated
Related Questions
Disadvantages For calculating median it is necessary to arrange the data; other averages do not need any arrangement. Since it is a positional average, its value is not d

Scatter Diagram The first step in correlation analysis is to visualize the relationship. For each unit of observation in correlation analysis there is a pair of numerical value

Now, let's look at a different linear combination. Suppose we are interested n comparing the average mean log income for no college education ( 16). 1. Write out the linear com

Question: (a) A normal distribution is thought to have a mean of 50. A random sample of 100 gave a mean of 52.6 and a standard deviation of 14.5. A significance test was carri

The quick method for a confidence interval for a proportion uses as an approximation for a 95% confidence interval.  The margin of error in this case is slightly larger tha

Bill Clinton reportedly was paid $10 million to write his book My Way. The book took three years to write. In the time he spent writing, Clinton could have been paid to make speech

I would like to know what the appropriate statistical test is for investigating an association between a nominal variable and an ordinal variable assuming normal distribution? It''


Grouped Data For calculating mode from a frequency distribution, the following formula   Mode = L mo +  x W where,

The following are the various types of common averages used in statistical analysis given in the form of a chart. Figure 1