THE MULTIPLE REGRESSION MODEL
Give this one a try later!
Y = B0+B1X1+B2X2+B3X3+.....BkXk+ei (random error)
If you have to drop one variable from the equation, what do you look at?
, Give this one a try later!
highest p-valued greater than the level of significance 0.05 variable should
be dropped because we cannot be confident enough that its slope is non-
zero.
using 2 numerical variables to predict Y to see if it has a significant relationship
between with both variables.
Give this one a try later!
test for ALL slopes in a Multiple regression model.
DUMMY VARIABLES
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work best in time series when there appears to be no trend in time;
disadvantage in that it cannot make predictions from previous years if used
when there is a trend, Multiple regression can also incorporate nominal
variables as independent variables, such as region. To use nominal
variables, each value of the nominal variable is coded as 0 or 1. A variable
that has only two values, 0 or 1, is called a dummy variable.
INTERCEPT
Give this one a try later!
Give this one a try later!
Y = B0+B1X1+B2X2+B3X3+.....BkXk+ei (random error)
If you have to drop one variable from the equation, what do you look at?
, Give this one a try later!
highest p-valued greater than the level of significance 0.05 variable should
be dropped because we cannot be confident enough that its slope is non-
zero.
using 2 numerical variables to predict Y to see if it has a significant relationship
between with both variables.
Give this one a try later!
test for ALL slopes in a Multiple regression model.
DUMMY VARIABLES
Give this one a try later!
work best in time series when there appears to be no trend in time;
disadvantage in that it cannot make predictions from previous years if used
when there is a trend, Multiple regression can also incorporate nominal
variables as independent variables, such as region. To use nominal
variables, each value of the nominal variable is coded as 0 or 1. A variable
that has only two values, 0 or 1, is called a dummy variable.
INTERCEPT
Give this one a try later!
