User Manual

* The number of samples for the entered data will be dis-
played.
• Entered data are kept in memory until @c or
@” are pressed. Before entering new data, clear
the memory contents.
• If the number of the sample values exceeds 999,999,999
“
n =” will not appear.
• When inputting a formula as a sample value with frequency,
parenthesize the data.
Example: (
A * B )§ frequency k
Calculating Statistical Quantities
@c ’
30 § 5 k n = 5.
40 § 3 k n = 8.
50 § 10 k n = 18.
60 § 12 k n = 30.
70 § 13 k n = 43.
80 § 9 k n = 52.
90 § 7 k n = 59.
100 § 3 k n = 62.
@÷ 65.32258065
@£ 18.52935128
@p 18.37931358
@n n = 62.
@z Σ x = 4050.
@w Σ x
2
= 285500.
Score Number of
Persons
30 5
40 3
50 10
60 12
70 13
80 9
90 7
100 3
• If both the resulting digits and the function name (such as
Σ x=) cannot be contained in the display, only the resulting
value will be displayed; the function name will not be
displayed.
Statistical Calculation Formulas
Σx = x
1
+ x
2
+ ··· + x
n
Σx
2
= x
1
2
+ x
2
2
+ ··· + x
n
2
( n : number of samples)
x =
Σx
n
sx =
Σx
2
– nx
2
n – 1
σx =
Σx
2
– nx
2
n
In the statistical calculation formulas, an error will occur if:
• the absolute value of the intermediate result or calculation
result is equal to or greater than 1 x 10
100
.
• the denominator is zero.
• an attempt is made to take the square root of a negative
number.
∏  
∂  ∂ ∂√∫   
∂√∫
Correcting Entered Data
Correction prior to pressing k:
Delete incorrect data with N.
Correction after pressing k:
press > to confirm the latest entry and press @J
to delete it.
Calculation Ranges
• Within the ranges specified below, this calculator is
accurate to ±1 of the least significant digit of the
mantissa. However, a calculation error increases in con-
tinuous calculations due to accumulation of each cal-
culation error. (This is the same for y
x
,
x
¿¿
¿¿
¿
y, etc. where
continuous calculations are performed internally.)
Additionally, a calculation error will accumulate and
become larger in the vicinity of inflection points and
singular points of functions.
• Calculation range: ±10
-99
~ ±9.999999999×10
99
and 0.
If the absolute value of an entry or a final or intermediate
result of a calculation is less than 10
–99
, the value is consid-
ered to be 0 in calculations and in the display.
Function Dynamic range
sin x
DEG : |x| < 10
10
cos x
(tan x : |x| ≠ 90(2n–1))*
tan x
sin
–1
x
|x| ≤ 1
cos
–1
x
tan
–1
x |x| < 10
100
.
y > 0: –10
100
< xlogy < 100
y
x
. y = 0: 0 < x < 10
100
.
y < 0: x = n (0 < |x| < 1: – = 2n–1, x ≠ 0)*,
–10
100
< xlog |y| < 100
.
y > 0: –10
100
< – logy ≤ 100 (x ≠ 0)
x
¿y
.
y = 0: 0 < x < 10
100
.
y < 0: x = 2n–1 (0 < |x| < 1: – = n, x ≠ 0)*,
–10
100
< – log |y| ≤ 100
1
x
1
x
1
x
1
x
Error Codes and Error Types
Syntax error (Error 1):
• An attempt was made to perform an invalid operation.
Ex. 2 +- 5 =
Calculation error (Error 2):
• The absolute value of an intermediate or final calculation result
equals or exceeds 10
100
.
• An attempt was made to divide by 0.
• The calculation ranges were exceeded while performing calcu-
lations.
Depth error (Error 3):
• The available number of buffers was exceeded. (There are 8
buffers* for numeric values and 16 buffers for calculation in-
structions).
* 4 buffers in STAT mode.
Equation too long (Error 4):
• The equation exceeded its maximum input buffer (159 charac-
ters). An equation must be shorter than 159 characters.
Enter the data “7” N@” ’
@c 7 7_
k n = 1. *
There are 13 students @c 70 § 13 70, 13_
who scored 70 in the k n = 13.
test, and 5 students 50 § 5 50, 5_
who scored 50. k n = 18.
ERROR AND CALCULATION RANGES
Errors
An error will occur if an operation exceeds the calculation
ranges, or if a mathematically illegal operation is attempted. If
an error occurs, pressing < (or >) automatically moves
the cursor back to the place in the equation where the error
occurred. Edit the equation or press N to clear the
equation.