Radio Shack TRS-80 Model 100 Basic Manual page 204

Save the program in a RAM file by entering the command:
SAVE "STAT"
You may wish to save the descriptive statistics program on a separate cassette to make
loading faster in the future. Use the command
CSAVE "STAT"
to write the program to a blank cassette.
This program computes a variety of common statistical measures on a set of data. The
data must be in the form of a file either in RAM or on cassette. You can use TEXT to
create the data file.
Go to the Menu by pressing (lID. Move the cursor over the word
TEXT
and press
(ENTER). You will see the prompt
File to edit?
Enter a name for the data file to be created. For example, enter a file name of DATA:
File to edit? DATA
Type a list of data values separated with either commas or carriage returns. You can
speed up this process by pressing (NUM) and then using the appropriate keys as a
ten-key number pad.
For example, type:
23.5,35.7t45.Z,4Gt1Z,G7,30,44,ZZ,33,45<
lG ,37,5G ,74 t82 ,13 t28 ,74 tGG ,91 t43 ,32 t55<
4G ,77 t31,8G t58,59 tGZ ,43 ,71,38 tG9 ,Z3 t77<
48,39t4Z,3Gt4S,30t37,43t47,41<
Save the data as a RAM file by pressing
CEID.
You will return to the Menu. If you
want to make any changes to your data file, simply move the cursor over the file
name DATA.DO and press (ENTERl. Use the standard Editor commands to make your
changes.
After your data file is created, you can use the descriptive statistics program to list it,
sort it, compute the number of values, the maximum and minimum, the mean,
median, variance and standard deviation. You can also plot a histogram of the data to
give an indication of its distribution.
From the Menu, place the cursor over the file name
STAT. BA
and press (ENTER).
This will load and execute the descriptive statistics program. You should see the
prompt:
RAM or CASSETTE FILE (R or C)?
If you have saved your data in the RAM file DATA.DO as described above, enter an
R. You will see:
RAM or CASSETTE FILE (R or C)? R
FILE NAME?
Enter the name of your data file. For the example, enter a file name of DATA. The
display will clear and another prompt is displayed:
OUTPUT DATA (Y or N)?
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