整合平均值及總體標準差
程式 (共61字):
√( ( CA2 + CB2 + X1X2 + X1Y2 ) / ( C + X1 ) - ( AC + XX1 )2 / ( C + X1 )2 ) X2
+ ( AC + XX1 ) ( C + X1 )-1 cos( sin-1( X2 ) )
SAVE PROG1 或 PROG2 (SRP-285II計數機)
STO EQN (HP 30S計數機)
例題: 將下列的兩組數據整合為一組。
|
組別 |
數量 |
平均值 |
總體標凖差 |
|
1 |
30 |
80 |
15 |
|
2 |
40 |
70 |
10 |
SRP-285II 按法:
按 2nd CL-VAR P/V RCL，再按 ← 選擇正確的PROG，再按 = =
30 = 80 = 15 = 40 = 70 = 10 = = (0代表整合平均值，顯示答案為74.28571429)
↑1 = (1代表整合總體標凖差，顯示答案為13.34395835)
HP 30S 按法:
按 2nd CL-VAR VRCL，再按 ← = =
30 = 80 = 15 = 40 = 70 = 10 = = (0代表整合平均值，顯示答案為74.28571429)
↑1 = (1代表整合總體標凖差，顯示答案為13.34395835)