Whether the calculated Durbin-Watson statistic (D) indicates significant
autocorrelation depends on __________________, and the _________________________ in the regression
model, k.
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, the sample size, n
number of predictors in the regression model, k.
Apply your understanding of inference for means using _______________ to inference about
regression coefficients.
Know the Assumptions and Conditions for inference about regression coefficients and
how to check them, in this order:
The standard error of the slope is the _______________________ of the sampling distribution of
the slope.
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Student's t
Linearity Assumption• Independence Assumption• Equal Variance
Assumption• Normal Population Assumption
estimated standard deviation
Sum of Squared Residuals:
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SSE = sum (e^2)
Latter of Powers:
,-1/2: The (negative) reciprocal square root (-1/ (sqrt y))
An uncommon re-expression, but sometimes useful. Changing the sign to take the
negative of the reciprocal square root preserves the ___________________, which can be a bit
simpler.
Give this one a try later!
direction of relationships
• Automated methods for seeking regression models include __________ and ______________.
____________ should be used without carefully diagnosing the resulting model.
Give this one a try later!
Best Subsets
Stepwise regression
Neither one
Simple Moving Average Methods
The ___________ replaces each value in a time series by an average of the adjacent values.
The number of values used to construct each average is called the __________ of the
moving average.
A _______________ L, denoted MA(L),simply uses the mean of the previous L actual values as
the fitted value at each time.
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, moving average
length (L)
moving average of length
Best Subsets and Stepwise Regression:
There are several automated systems for searching out "best" models once a single
criterion is selected for optimization, including:
________ Regression
___________ Regression
These methods ________ check the assumptions and conditions and are vulnerable to
other complications.
Even though the process is "automated", human oversight and analysis is still
necessary to guard against ___________.
Give this one a try later!
Best Subsets
Stepwise
do not
misleading results
Dichotomous responses can be re-expressed in terms of the responses "0" and "1" to
make them _________________ instead of categorical.
Give this one a try later!
autocorrelation depends on __________________, and the _________________________ in the regression
model, k.
Give this one a try later!
, the sample size, n
number of predictors in the regression model, k.
Apply your understanding of inference for means using _______________ to inference about
regression coefficients.
Know the Assumptions and Conditions for inference about regression coefficients and
how to check them, in this order:
The standard error of the slope is the _______________________ of the sampling distribution of
the slope.
Give this one a try later!
Student's t
Linearity Assumption• Independence Assumption• Equal Variance
Assumption• Normal Population Assumption
estimated standard deviation
Sum of Squared Residuals:
Give this one a try later!
SSE = sum (e^2)
Latter of Powers:
,-1/2: The (negative) reciprocal square root (-1/ (sqrt y))
An uncommon re-expression, but sometimes useful. Changing the sign to take the
negative of the reciprocal square root preserves the ___________________, which can be a bit
simpler.
Give this one a try later!
direction of relationships
• Automated methods for seeking regression models include __________ and ______________.
____________ should be used without carefully diagnosing the resulting model.
Give this one a try later!
Best Subsets
Stepwise regression
Neither one
Simple Moving Average Methods
The ___________ replaces each value in a time series by an average of the adjacent values.
The number of values used to construct each average is called the __________ of the
moving average.
A _______________ L, denoted MA(L),simply uses the mean of the previous L actual values as
the fitted value at each time.
Give this one a try later!
, moving average
length (L)
moving average of length
Best Subsets and Stepwise Regression:
There are several automated systems for searching out "best" models once a single
criterion is selected for optimization, including:
________ Regression
___________ Regression
These methods ________ check the assumptions and conditions and are vulnerable to
other complications.
Even though the process is "automated", human oversight and analysis is still
necessary to guard against ___________.
Give this one a try later!
Best Subsets
Stepwise
do not
misleading results
Dichotomous responses can be re-expressed in terms of the responses "0" and "1" to
make them _________________ instead of categorical.
Give this one a try later!
