– E-17 –
Correction after pressing
k
:
Reenter the data to be corrected and press
@
J
.
• The number displayed after pressing
k
or
@
J
during data entry or correction is the number of
samples (
n
).
Statistical Calculation Formulas
STAT
Fª@Æ
0.
30
k
1.
40
*
2
k
3.
50
k
4.
50
@J
3.
40
*
2
@J
1.
45
*
3
k
4.
60
k
5.
↓
DATA
30
45
45
45
60
DATA
30
40
40
50
In the statistical calculation formulas, an error will occur
when:
• the absolute value of the intermediate result or calcula-
tion result is equal to or greater than 1
×
10
100
.
• the denominator is zero.
• an attempt is made to take the square root of a negative
number.
x
=
–
Σ
x
n
Σ
x
2
–
nx
2
n
–
σ
x
=
Σ
x
2
–
nx
2
n
–
1
–
sx
=
Σ
x
=
x
1
+
x
2
+ ··· +
x
n
Σ
x
2
=
x
1
2
+
x
2
2
+ ··· +
x
n
2
501E_en0610.pm65
06/10/2004, 13:53
17
