45
SD Type Statistical Calculation Example:
To calculate ∑x
2
, ∑x, n, x, x
n
, x
n-1
, minX, maxX of data: 75,
85, 90, 77, 79 in SD mode (Freq: OFF)
Quadratic Regression Type Statistical Calculation Example:
ABC Company investigated the effectiveness of advertisement
expenses in coded units, the following data was obtained:
∑x
2
33120
∑x
406
n
5
x
81.2
x n
5.528109984
x n-1
6.180614856
(SD)
Display
Key in operation
Advertisement expenses: X
18
35
40
21
19
Effectiveness: y (%)
38
54
59
40
38
Statistical Calculation Example
Apps
Apps
Apps
Apps
Apps
Apps