Exam 9: Experimental Design

Subgroups are to stratified random sampling as ____ is/are to the randomized block design.

A(n)_______________ is a major independent variable in an experiment.

R X 0 R 0 -What type of design is shown above?

Figure TB 9-10 -What type of design is shown in the accompanying figure?

Random assignment depends on the idea of probabilistic equivalence.

A(n)_______________ design is a two-group design in two phases defined by three waves of measurement.

Sue,an instructor,wonders whether using a red pen to correct papers is really necessary,as it has always seemed rather harsh to her.When her students complete a pretest,she randomly assigns them to a "Red Pen" group and a "Gold Pen" group,corrects their papers using the corresponding colored pens,and returns the students' papers.After her students complete the real exam,Sue compares the average scores of the Red and Gold groups.This is an example of a(n)____.

Who is credited with the invention of experimental design?

Experimental design in vulnerable to selection-_______________ threats.

What is the reasoning behind the randomized block design?

Covariance designs are classified as ____ designs.

Although any continuous variable can be used as a covariate,a(n)_______________ is usually best.

In a(n)_______________ design some of the cells are intentionally left empty and subjects are not assigned to certain combinations of factors.

A(n)_______________ is a subdivision of the major independent variable.

​Figure TB 9-3 -What is illustrated in the accompanying figure?

Random assignment depends on the idea of _______________.

A(n)____ exists when differences on one factor depend on your level on another factor.

Experimental design is generally strong against selection-history threats.

A design in which some cells or combinations in a factorial design are intentionally left empty is said to be ____.

A design that includes the pairing of every combination of factor levels is said to be ____.