A decision matrix is an aid to the `determination of sample size for

variable sampling programs and can be used for either simple random or

stratified random sampling designs. The decision matrix is simply a tabular

presentation that incorporates the factors necessary to determine sample

size: (a) an estimate of the mean, (b) an estimate of the variability,

desired precision, (d) the acceptable probability of error, and (e) the

costs associated with sampling. See Gaugush (1987) for a more complete

discussion of determining sample size and the use of decision matrices.

To run the Decision Matrices program, simply type

at the

DOS prompt. Be sure your default directory (i.e., the directory that you

are in when you enter the above command) contains all of the files on the

Sampling Design Software disk.

After the above command is entered, the program will prompt you for

all of the necessary inputs. Program flow is as follows:

a. Introductory screen.

Prompt for output route output may be routed to either the screen

only or to a disk

as well as the screen (if disk file output is

chosen, the program will prompt for a file name).

c. Data entry.

d. View output.

e. Repeat analysis with new data.

Exit program.

Chapter 2 Decision Matrices

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