4502686
Descripción
Test por Bradford Richard, actualizado hace más de 1 año
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Creado por Bradford Richard
hace alrededor de 8 años
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Pregunta 1
Pregunta
When we study the relationship between two variables we refer to the data as
Respuesta
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Tri-variate
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regression
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dependant variable
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b-variate
Pregunta 2
Pregunta
A _______ diagram is a chart that portrays the relationship between two variables.
Respuesta
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Scatter
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Line
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X-Y
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Grid
Pregunta 3
Pregunta
DEPENDENT VARIABLE
The variable that is being predicted or estimated. It is scaled on the
Respuesta
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b variable
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a variable
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Y-Axis
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X-Axis
Pregunta 4
Pregunta
INDEPENDENT VARIABLE
The variable that provides the basis for estimation. It is the predictor variable.
It is scaled on the
Respuesta
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a variable
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b variable
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Y-Axis
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X-Axis
Pregunta 5
Pregunta
In ________ _________ we use the independent variable (X) to estimate the dependent variable (Y):
Respuesta
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Regression Analysis
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Confidence Interval
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Coefficient of Correlation
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Coefficient of Determination
Pregunta 6
Pregunta
An equation that expresses the linear relationship between two variables.
Respuesta
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Regression Equation
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Bi-variate Equation
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Coefficient of correlation Equation
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Coefficient of determination Equation
Pregunta 7
Pregunta
Determining a regression equation by minimizing the sum of the squares of the vertical distances between the actual Y values and the predicted values of Y is known as the...
Respuesta
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Least squares principle
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standard error of estimate
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confidence interval
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prediction interval
Pregunta 8
Pregunta
__ is the predicted value of theY variable for a selected X value.
Respuesta
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Y'
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ß
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Se
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r
Pregunta 9
Pregunta
is the Y-intercept. It is the estimated value of Y when
X = 0.
Respuesta
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a
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b
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X
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Y'
Pregunta 10
Pregunta
___ is the slope of the line, or the average change in Y' for each change of one unit (either increase or decrease) in the independent variable, X.
Respuesta
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a
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b
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Y'
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X
Pregunta 11
Pregunta
_____________ measures the scatter, or dispersion, of the observed values around the line of regression.
Respuesta
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standard error of estimate
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prediction interval
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Coefficient of correlation
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Coefficient of determination
Pregunta 12
Pregunta
We model the linear relationship in the population by the equation:
Respuesta
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Y=a+b
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Y'=a+bx
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Yʹ′±tSe
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X=Y'-b
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