Statistical Data Memory and Program Memory

The following shows how the calculator uses memory for storage of statistical data and programs.

Statistical

Data

Programs

(a)Statistical data only (256 bytes)

(b)Shared between statistical data and programs (360 bytes)

←(c) Shared between program management and statistical data (24 bytes)

kStatistical Data

•Each x-data or y-data (for regression calculations) item and each frequency value (other than 1) that you input uses up eight bytes of memory.

Example: Inputting the following in the SD Mode uses 40 bytes of memory: 30 A G 2 S 27 A G 1 S 32 A G 5 S

•The memory area indicated as (a) in the above illustration is exclusively for statistical data items. Since this area has 256 bytes, it can contain up to 32 individual (frequency = 1) x-data items (256 bytes  8 bytes per data item = 32).

•When memory area (a) becomes full, statistical data items are stored in the free space (space not being used for program storage) of memory area (b), if there is any. If there are no programs currently stored in memory, memory area (c) is also used to store statistical data items. Memory areas (a), (b), and (c) have a total capacity of 640 bytes, so there is enough total memory to store up to 80 individual (frequency = 1) x-data items (640 bytes  8 bytes per data item = 80).

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