Test
Statistics Chapter 12
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Preguntas del test (12)
1When we study the relationship between two variables we refer to the data as
- ATri-variate
- Bregression
- Cdependant variable
- Db-variate
2A _______ diagram is a chart that portrays the relationship between two variables.
- AScatter
- BLine
- CX-Y
- DGrid
3DEPENDENT VARIABLE The variable that is being predicted or estimated. It is scaled on the
- Ab variable
- Ba variable
- CY-Axis
- DX-Axis
4INDEPENDENT VARIABLE The variable that provides the basis for estimation. It is the predictor variable. It is scaled on the
- Aa variable
- Bb variable
- CY-Axis
- DX-Axis
5In ________ _________ we use the independent variable (X) to estimate the dependent variable (Y):
- ARegression Analysis
- BConfidence Interval
- CCoefficient of Correlation
- DCoefficient of Determination
6An equation that expresses the linear relationship between two variables.
- ARegression Equation
- BBi-variate Equation
- CCoefficient of correlation Equation
- DCoefficient of determination Equation
7Determining 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...
- ALeast squares principle
- Bstandard error of estimate
- Cconfidence interval
- Dprediction interval
8__ is the predicted value of theY variable for a selected X value.
- AY'
- Bß
- CSe
- Dr
9is the Y-intercept. It is the estimated value of Y when X = 0.
- Aa
- Bb
- CX
- DY'
10___ 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.
- Aa
- Bb
- CY'
- DX
11_____________ measures the scatter, or dispersion, of the observed values around the line of regression.
- Astandard error of estimate
- Bprediction interval
- CCoefficient of correlation
- DCoefficient of determination
12We model the linear relationship in the population by the equation:
- AY=a+b
- BY'=a+bx
- CYʹ′±tSe
- DX=Y'-b
Información
- Descripción
- for NBCC Statistics ii course
- Autor
- Bradford Richard
- Idioma
- English
- Visitas
- 37
- Etiquetas
- Valoración
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