36 37
Access the statistical mode using ; "SD" appears in
the display.
Example: Find σ
n-1, σn, x, n, Σx und Σx
2
on the basis of the
data 55, 54, 51, 55, 53, 53, 54, 52.
SD 8.
(Standard deviation of the random sample)
SD 1.407885953
(Mean value of the standard deviation)
SD 1.316956719
(Arithmetic mean)
SD 53.375
(Number of random samples)
SD 8.
(Sum value)
SD 427.
(Squared sum value)
SD 22805.
Note: The standard deviation of the random sample σ
n-1 is
defined as follows:
The mean value of the standard deviation σ
n is defined as follows:
10. STATISTICAL CALCULATIONS9. CALCULATIONS WITH FUNCTIONS
9.9) Converting right angle coordinates into polar
coordinates
Formula: r = x
2
+ y
2
θ = tan
-1
y ( -180° θ 180°)
x
Example: Find the radius (r) and the angle θ for the point (P) x =
1 and y = 3 in the right angle coordinate system
„RAD“ 1
3 2.
(r)
1.047197551
(θ as radian)
2.
(r)
