Citizen SRP-265N: The Display

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2009/4/15 

-E7- 

[ DATA ], [ DEL ] Data Entry and Delete Key 

In the STAT mode, enter data by pressing the desired numbers, then 

[ DATA ]. If you enter incorrect data and do not notice your mistake 

until you press [ DATA ], enter the same incorrect data and then press 

[ DEL ] to delete that incorrect data.  

[ 

x  ] Arithmetic Mean Key 

Calculates the arithmetic mean (

x  ) of the data. 

[ 2ndF ] [

σ

] Population Standard Deviation Key 

Calculates the population standard deviation of the data. 

[ S ] Sample Standard Deviation Key 

Calculates the sample standard deviation of the data. 

[ 2ndF ] [

Σ

x 

2 

] Sum of Square Value Key 

Calculates the sum of the square value (

Σ

x 

2

) of the data. 

[ 2ndF ] [ 

Σ

x ] Sum of Value Key 

Calculates the sum of the value (

Σ

x ) of the data. 

[ n ] Number of Data Key 

Displays the number of data (n) entries. 

The Display 

Indicators showed on the display to indicate you the current status of 

the calculator. 

•

  Floating point displays up to 10 digits. 

•

  The mantissa section displays up to 8 digits. the exponent section 

displays up to 

±

99. 

STAT 

:  Indicates the statistical mode. 

M 

:  Indicates that a value is stored in memory. 

– 

:  Appears to the left of the mantissa or exponent to 

indicate that the respective value is negative. 

E 

:  Indicates an error. 

PGM 

:  Indicates the program learn mode. 

CONST : Indicates 

the constant mode. 

GRAD 

:  Indicates the gradient units have been selected. 

RAD 

:  Indicates that radian units have been selected. 

DEG 

:  indicates that degree units have been selected. 

BUSY 

:  While an operation is executing.

σ

 : 

Indicates the deviation value 

2F 

:  Appears when the second function has been 

selected. 

HYP 

:  Appears when the hyperbolic function has been 

selected. 

( 

:  Appears when you press [ ( ]. It shows the 

present level of nesting.