Sharp EL-5230 User Manual

Statistics of 1 and 2 and coefficients a, b, c

 in the quadratic regression

formula (y = a + bx + cx

). (For quadratic regression calculations, no correla-

tion coefficient (r) can be obtained.)

All data entered is kept in memory until STAT memory clear (@ P
2 y) is operated or a new STAT sub-mode is selected. Before
entering new data, clear the memory contents.

Single-variable data

Data _
Data , frequency _ (To enter multiples of the same data)

Two-variable data

Data x , Data y _
Data x , Data y , frequency _ (To enter multiples of the
same data x

 and y.)

• Up to 100 data items can be entered. With single-variable data, a data item

without frequency assignment is counted as one data item, while an item
assigned with frequency is stored as a set of two data items. With two-
variable data, a set of data items without a frequency assignment is
counted as two data items, while a set of items assigned with frequency is
stored as a set of three data items.

Correction prior to pressing _ immediately after a data entry:

Delete incorrect data with j, then enter the correct data.