File EGATESTS.ZIP from The Programmer’s Corner in
Category Science and Education
EGATESTS is an easy to use teacher’s tool. It provides descriptive statistical analysis designed to facilitate in the evaluation and assessment of classroom tests.
File Name File Size Zip Size Zip Type
EGAGRAF.COM 273 269 deflated
EGATESTS.EXE 81820 46524 deflated
SAMPLE.DAT 388 143 deflated
T-MANUAL.DOC 4639 1852 deflated

## Contents of the T-MANUAL.DOC file

-Page 1-

EGATESTS Version 1.0

Users Manual

I. DESCRIPTION:

EGATESTS is an easy to use descriptive statistical program
designed to facilitate in the evaluation and assessment of classroom
tests. The purpose of this program is to give a high degree of
feedback on the performance of students on the examination and also
the effectiveness of the measuring instrument itself.

II. LIMATIONS:

There are two limitations on the kind of data that will be
accepted by the program: 1. All data must be integer data (UPPER
LIMIT 300); 2. The range of scores given must not exceed 88.

III. INPUT PARAMATERS

When the program is run the user will be prompted on various
options. These are: a) the number of points on the examination used
for calculating percentages b) the nature of the response data--
number of correct or incorrect responses. c) the manner of data
input--file or directly from the keyboard.

Note: To end input from the keyboard simply hit the t-key and press
ENTER.

IV. FILE FORMAT

Files need to to be simply a list of numbers in pure ASCII comma
deliminated format as follows:

3
4
6
7
8
13
10
9
7
t

The t at the end of the file indicates to the computer to terminate
input. In creating files, I simply use DOS EDLIN with each number
placed on a seperate line. See the sample file (SAMPLE.DAT) which has
been included for an example (120 pts., data is INcorrect responses).

-Page 2-

V. INTERPRETING AND PRINTING THE OUTPUT

A. Percentiles were calculated using the following formula:

PERCENTILE = 100 - [ (RANK - .5) / N x 100 ]

Note: The .5 subtracted from rank deals with the problem of
whether the subject being a member of the data set
scored better or worse than him or herself.

B. RELIALBILITY (KR21): Test reliability is estimated by the use
of a slight modification of Kudor and Richardsons KR21 reliability
statistic:
Points Mean x (Points - Mean)
KR21 = --------- x { 1 - ------------------------
Points - 1 Points x Variance

Please note that this statistic assumes that the data is dichotomous--
i.e. all answers scored as right or wrong (1, or 0). Violations of
this assumption (example: some questions worth 2 or more points) will
OVER-estimate the test reliability.

It is important to remember that reliability gives an indication of
how well the test maximized variance between students on one
homogeneous construct. Following is a subjective list for assessing
the reliability coefficient:

.60 to .70 Satisfactory
.70 to .80 Good
.80 to .90 Excellent
> .90 Professional test quality.

C. HISTOGRAM--The green connected lines on the historgram reflect
raw data frequency while the white bars represent smoothed frequencies.

D. To print your output I have included a copy of Charles
Petzold's EGAGRAF.COM screen print utility. This must be installed
before the program is run. To print the screen(s) simply hold down
the SHIFT-key and press the PRINT SCREEN key.

ACKNOWLEDGEMENTS:

Thanks to Dale Evers (Quincy, IL) and his BASWIND4 routines.
Microsoft Quick BASIC Version 4.0

Paul A. Wangerin
1821 W. Daisy Lane
Glendale, Wisconsin 53209

or

co Mark Wangerin via Exec-PC Mail

December 16, 2017