Casio FX-180PA Manual page 10

xaM ®
yom and
ISO,
Sample standard deviation, number of
data and sum of value product keys
In the LR mode, press ® xw ( 1 ®) to display the sample standard deviation (x Un- i
or yO,-1) of your data.
Press
to display the number of data. In the LR mode, press to display the
sum of value product (Exy) of your data.
D Constant term key
Press ®1iJ to display the constant term (A) in the LR mode.
© Regression coefficient key
In the LR mode, press
to obtain the regression coefficient (B).
© Correlation coefficient key
To get the correlation coefficient (r), press ®© in the LR mode.
Q9 , ® Q Estimator keys
In the LR mode, press ® to get the estimator of regression (G). Press
mode to get the estimator of regression (fl.
Q in the LR
Programming keys (Use in the LRN mode)
vt , ) 1 Program number key
Before writing a program in the LRN mode, and before carrying out a program in the RUN
mode, press ) J to select program 1 or a2 to select program 2.
=
® ENT, HLT and RUN key
To program your calculator to stop during a program so that you can enter variables, press
cxr in the LRN mode before each variable. To enter variables into a running program (in
the RUN mode), press the correct numbers and then press . To gel a program going
again after it has halted in the RUN mode, press
. To instruct a program to halt before
it's finished, press 95flJ in the LRN mode where you want it to stop.
pTM
Unconditional jump (return) key
Press ® ø( in the LRN mode to program your calculator to automatically return to the
first step of the program.
®
®
Conditional jump keys
Use these keys in the LRN mode during programming. To program your calculator to au-
tomatically return to the first step of the program when the content of the display (X-register)
is greater than 0 and to go on to the next step if the display is not greater than 0, press
~
To program your calculator to automatically return to the first step of the program when
the content of the display (X-register) is equal to or smaller than the independent memory
and to go on to the next step if the display is larger than the content of the independent
memory, press
l~
® Program clear key
Press ®® to erase program(s).
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