Review

Multiple Choice Review:

10.1 Data on the outcome of an experiment is found in the

a. experimental unit

b. response variable

c. factor or factors

d. treatments

e. experimental design

10.2 Analysis of variance often uses the following method to control for factors that may "confound" the test results?

a. replication

b. balanced design

c. randomized design

d. all of the above

e. none of the above

10.3 Which of the following is not a problem associated with trying to control confounding factors in an experimental design:

a. can be time consuming and costly

b. may overlook some factors that need to be controlled for

c. need to fix factors at realistic values for the results to be applicable

d. may prevent achieving a balanced design

e. all of the above are common problems encountered in controlling for other variables

10.4 Which of the following is not a problem associated with constructing a completely randomized design:

a. may not be able to compel participation in an experiment

b. it may be unethical to force participants to serve as guinea pigs

c. if only volunteers participate, self selection bias may resultBusiness Statistics and

d. participation may require costly compensation

e. all of the above are common problems encountered in constructing completely randomized designs

10.5 A property assessor wishes to determine whether property values vary among houses on difference sized lots. If the assessor measures property value only for a random sample of houses in the Atlanta area in October 1993, the relation between property value and lot size may be confounded if

a. property values differ between different regions of the country

b. property values vary from one year to the next

c. property values vary among houses different distances from downtown Atlanta jobs and shopping

d. property values differ among houses, apartments, and commercial

e. none of the above are capable of producing confounding...