QMB Exam 3
Treatments - Answer-Different levels of a factor
Response Variable - Answer-Another word for the dependent variable of interest
Factor - Answer-Another word for the independent variable of interest
ANOVA Table - Answer-A table used to summarize the analysis of variance computations and results. It
contains columns showing the source of variations, the sum of squares, the degrees of freedom, the
mean square, the F value, and the p-value. Determine if means of population are equal
Experimental Units - Answer-The objects of interest in the experiment
Completely randomized design - Answer-an experimental design in which treatments are randomly
assigned to the experimental units
Single-factor experiment - Answer-an experiment involving only one factor with k populations or
treatments
F distribution - Answer-A probability distribution based on the ratio of two independent estimates of the
variance of a normal population. The F distribution is used in hypothesis tests about the equality of k
population means.
, Matched Sample - Answer-One simple random sample of elements is selected and two data values are
obtained for each element. For example, to compare two production methods, one simple random
sample of n workers is selected. Each worker first uses one method and then the other method. the
order of the two methods is assigned randomly.
Independent Random Samples - Answer-Samples selected from two populations in such a way that the
elements making up one sample are chosen independently of the elements making up the other sample
Test of independence - Answer-A method of assessing whether two categorical variables are associated
or dependent
Pooled estimator of p - Answer-An estimator of a population proportion obtained by computing a
weighted average of the sample proportions obtained from two independent samples.
Independent Variable - Answer-The variable that is doing the predicting or explaining. It is denoted by x
Dependent Variable - Answer-The variable that is being predicted or explained. It is denoted by y
Regression Model - Answer-The equation that describes how y is related to x and an error term; in
simple linear regression, the regression model is y=Bo+b1(x)+e
Scatter Diagram - Answer-A graph of bivariate data in which the independent variable is on the
horizontal axis and the dependent variable is on the vertical axis
Coefficient of determination - Answer-A measure of goodness of fit of the estimated regression
equation. It an be interpreted as the proportion of variability in the dependent variable y that is
explained by the estimated regression equation.
Treatments - Answer-Different levels of a factor
Response Variable - Answer-Another word for the dependent variable of interest
Factor - Answer-Another word for the independent variable of interest
ANOVA Table - Answer-A table used to summarize the analysis of variance computations and results. It
contains columns showing the source of variations, the sum of squares, the degrees of freedom, the
mean square, the F value, and the p-value. Determine if means of population are equal
Experimental Units - Answer-The objects of interest in the experiment
Completely randomized design - Answer-an experimental design in which treatments are randomly
assigned to the experimental units
Single-factor experiment - Answer-an experiment involving only one factor with k populations or
treatments
F distribution - Answer-A probability distribution based on the ratio of two independent estimates of the
variance of a normal population. The F distribution is used in hypothesis tests about the equality of k
population means.
, Matched Sample - Answer-One simple random sample of elements is selected and two data values are
obtained for each element. For example, to compare two production methods, one simple random
sample of n workers is selected. Each worker first uses one method and then the other method. the
order of the two methods is assigned randomly.
Independent Random Samples - Answer-Samples selected from two populations in such a way that the
elements making up one sample are chosen independently of the elements making up the other sample
Test of independence - Answer-A method of assessing whether two categorical variables are associated
or dependent
Pooled estimator of p - Answer-An estimator of a population proportion obtained by computing a
weighted average of the sample proportions obtained from two independent samples.
Independent Variable - Answer-The variable that is doing the predicting or explaining. It is denoted by x
Dependent Variable - Answer-The variable that is being predicted or explained. It is denoted by y
Regression Model - Answer-The equation that describes how y is related to x and an error term; in
simple linear regression, the regression model is y=Bo+b1(x)+e
Scatter Diagram - Answer-A graph of bivariate data in which the independent variable is on the
horizontal axis and the dependent variable is on the vertical axis
Coefficient of determination - Answer-A measure of goodness of fit of the estimated regression
equation. It an be interpreted as the proportion of variability in the dependent variable y that is
explained by the estimated regression equation.
