HP 9g hp 9g_user's manual_English_E_HDP1SG18ES1.pdf - Page 23

Correcting Statistical Data, Probability Distribution 1-Var Data

Get HP 9g - Graphing Calculator PDF manuals and user guides View all HP 9g manuals
Add to My Manuals
Save this manual to your list of manuals

Page 23 highlights

, Cpx or Cpy Potential capability precision of the x values or y values, , Cpkx or Cpky ppm Minimum (CPU, CPL) of the x values or y values, where CPU is the upper spec. limit of capability precision and CPL is lower spec. limit of capability precision. C pkx = Min (CPUX, CPLX) = Cpx(1-Cax) Cpky = Min (CPUY, CPLY) = Cpy(1-Cay) Parts per million, Defection Per Million Opportunities. Note: When calculating process capability in 2-VAR mode, the x n and y n values are independent of each other. Correcting Statistical Data See Example 45. 1. Press [ DATA ]. 2. To change the data, select DATA-INPUT. To change the upper or lower spec. limit, select LIMIT. To change ax, select DISTR. 3. Press [ ] to scroll through the data until the entry you want to change is displayed. 4. Enter the new data. The new data you enter overwrites the old entry. 5. Press [ ] or [ ] to save the change. Note: The statistical data you enter is retained when you exit statistics mode. To clear the data, select D-CL mode. Probability Distribution (1-Var Data) See Example 46. 1. Press [ DATA ] , select DISTR and press [ ]. 2. Enter a a x value, then press [ ]. 3. Press [ 2nd ] [ STATVAR ]. 4. Press [ ] or [ ] to scroll through the statistical results until you find the probability distribution variables you want (see table below). Variable Meaning t Test value P(t) The cumulative fraction of the standard normal distribution that is less than t. E-23

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
E-23
,
Cpx
or
Cpy
Potential capability precision of the x values or y values,
,
Cpkx
or
Cpky
Minimum (CPU, CPL) of the x values or y values, where
CPU is the upper spec. limit of capability precision and
CPL is lower spec. limit of capability precision.
C
pkx
= Min (C
PUX
, C
PLX
) = C
px
(1–C
ax
)
C
pky
= Min (C
PUY
, C
PLY
) = C
py
(1–C
ay
)
ppm
Parts per million, Defection Per Million Opportunities.
Note: When calculating process capability in
2-VAR
mode, the x
n
and y
n
values are independent of each other.
Correcting Statistical Data
See Example 45.
1.
Press [ DATA ].
2.
To change the data, select
DATA-INPUT
. To change the upper or lower
spec. limit, select
LIMIT
. To change a
x
, select
DISTR
.
3. Press [
] to scroll through the data until the entry you want to
change is displayed.
4.
Enter the new data. The new data you enter overwrites the old entry.
5. Press [
] or [
] to save the change.
Note: The statistical data you enter is retained when you exit statistics mode.
To clear the data, select
D-CL
mode.
Probability Distribution (1-Var Data)
See Example 46
.
1.
Press [ DATA ] , select
DISTR
and press [
].
2. Enter a
a
x
value, then press [
].
3.
Press [ 2nd ] [ STATVAR ].
4. Press [
] or [
] to scroll through the statistical results until you find
the probability distribution variables you want (see table below).
Variable
Meaning
t
Test value
P(t)
The cumulative fraction of the standard normal
distribution that is less than
t
.