column (bar) chart
DJ needs to display data over time. Which of the following charts should DJ use?
line chart
Looking at the following chart showing time series data for regular gasoline prices in the
United States for 24 consecutive months, you can make this interpretation about gas prices:
Overall the price of gasoline was extremely consistent during the time period shown.
FALSE
Which of the following can be used to show overall trend?
spark lines
A PivotChart
is a graphical presentation created in Excel that functions similar to a PivotTable.
__________ is a statistical procedure used to develop an equation showing how two variables
are related.

Regression analysis
Regression analysis involving one independent variable and one dependent variable is referred
to as
simple linear regression.
Simple linear regression refers to the type of regression analysis for which the relationship
between the independent variable and dependent variable are approximated by a(n)
exponential curve.
A(n) ________ refers to a measurable factor that defines a characteristic of a population,
process, or system.
Parameter
In the simple linear regression model, the ________ accounts for the variability in the
dependent variable that cannot be explained by the linear relationship between
x
and
y
.
error term
In the simple linear regression equation, the parameter B0 represents the _____ of the true
regression line.
y
-intercept
In the simple linear regression equation, the parameter B1 is the _______ of the true regression
line.
Slope
Two variables have a positive linear correlation. As the dependent variable increases, the
independent variable will
increase.
The procedure of using sample data to find the estimated regression equation is better known
as
the least squares method.
A _____ is used to visualize sample data graphically and to draw preliminary conclusions
about the possible relationship between the variables.
scatter chart
The difference between the observed value of the dependent variable and the value predicted
using the estimated regression equation is known as the
residual.
The _____ is the range of values of the independent variables in the data used to estimate the
regression model.
experimental region

Prediction of the value of the dependent variable outside the experimental region is called
extrapolation.
Suppose an estimated regression equation has a coefficient of determination (
r
2) of 0.866.
Interpret this value.
The estimated regression equation explains approximately 86.6% of the variation in the
dependent variable.
The _____ is a measure of the error that results from using the estimated regression equation
to predict the values of the dependent variable in a sample.
sum of squares due to error (SSE)
The coefficient of determination
is defined as SSR/SST.
What would be the coefficient of determination if the total sum of squares (SST) is 30 and the
sum of squares due to regression (SSR) is 27?

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- Winter '10
- goldstein
- Regression Analysis, Wyche Accounting