Stats, Matrices & Other Modes In Programs

for Casio Graphic Calculators (6300/7000/7700/9700 & Compatibles)

Statistics In Programs

On the original models each button on the keyboard was overloaded with several functions and the function you got depended on which mode you were in, which meant if you were in one of the statistics mode you couldn't use many of the other functions. On later modes this was fixed with a menu system with most of the commands on one of the menus and not on the keyboard.

To use stats functions in a program you must put the calculator in stats mode before you start typing in a program. Once you start typing then the mode for that program area is set. Before entering any data use the 'Scl' function to clear the statistics memory. To enter a single set of data use the SD mode (mode x) with the command 'DT' e.g. 5DT means enter the number 5 and 5;3DT means enter the number 5 three times. To enter two sets of data use the LR mode. (mode /) 2,3DT means enter the number 2 and the corresponding number 3 whereas 2,3;7DT means enter this pair seven times. Once data has been entered you can display the stats functions e.g. sigma x^2_ sigma x_ xsn-1_ etc. It is also possible to do something like : ?->A : ADT : where the inputteddata is not known at the start but is asked from the user when the program is run.

Matrices In Programs

The early 7700 models had matrix functionality but you couldn't use them in programs. However, you can do so in the GE and later models. To use matrix functions in a program you must put the calculator in matrix mode before you start typing in a program. Once you start typing then the mode for that program area is set. A program can only alter an existing matrix or create one by specifying every element. See the Language Summary page for the commands. To create a matrix without having to specify every element, you have to exit out of 'program mode' into COMP mode and then into matrix mode where the dimensions of a matrix can be specified. A matrix created this way starts with all entries equal to zero.

Mixing Modes

On models with function-memory, it is possible to use commands from different modes in the same program. For example, you could set up one program area in matrix mode and another in stats mode. Then use some stats commands in one area, store them in f-memory and recall them in the matrix area.

Angular Mode

The calculator can be set up to use degrees, radians or grads in its angle calculations. Check that you are using the setting that you want if you are using trig functions or polar graphs or the Rec( or Pol( commands.