Sharp EL-501E

– 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 =
–
Σx
n
Σx
2
– nx
2
n
–
σx =
Σx
2
– nx
2
n – 1
–
sx =
Σx = x
1
+ x
2
+ ··· + x
n
Σx
2
= x
1
2
+ x
2
2
+ ··· + x
n
2
501E_en0610.pm65 06/10/2004, 13:5317