Texas Instruments BA-20 Profit Manager User Manual - Page 71

Computing Statistical Results, Selecting a Statistics Calculation Method, Computing Results

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Computing Statistical Results Selecting a Statistics Calculation Method 1. Press & k to select the statistical calculation portion of the Statistics worksheet. 2. The last selected statistics calculation method is displayed (LIN, Ln, EXP, PWR, or 1-V). 3. Press & V repeatedly until the statistics calculation method you want is displayed. 4. If you are analyzing one-variable data, select 1-V. 5. Press # to begin computing results. Computing Results To compute results based on the current data set, press # repeatedly after you have selected the statistics calculation method. The calculator computes and displays the results of the statistical calculations (except for X' and Y') automatically when you access them. For one-variable statistics, the calculator computes and displays only the values for n, v, Sx, sX, GX, and GX2. Computing Y' 1. To select the Statistics worksheet, press & k. 2. Press " or # until X' is displayed. 3. Key in a value for X' and press !. 4. Press # to display the Y' variable. 5. Press % to compute a predicted Y' value. Computing X' 1. To select the Statistics worksheet, press & k. 2. Press " or # until Y' is displayed. 3. Key in a value for Y' and press !. 4. Press " to display the X' variable. 5. Press % to compute an X' value. Statistics Worksheet 67

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Statistics Worksheet
67
Computing Statistical Results
Selecting a Statistics Calculation Method
1.
Press
& k
to select the statistical calculation portion of the
Statistics worksheet.
2.
The last selected statistics calculation method is displayed (
LIN
,
Ln
,
EXP
,
PWR
, or
1-V
).
3.
Press
& V
repeatedly until the statistics calculation method you
want is displayed.
4.
If you are analyzing one-variable data, select
1-V
.
5.
Press
#
to begin computing results.
Computing Results
To compute results based on the current data set, press
#
repeatedly
after you have selected the statistics calculation method.
The calculator computes and displays the results of the statistical
calculations (except for
X'
and
Y'
) automatically when you access them.
For one-variable statistics, the calculator computes and displays only the
values for
n
,
v
,
Sx
,
s
X
,
G
X
, and
G
X
2
.
Computing Y'
1.
To select the Statistics worksheet, press
& k
.
2.
Press
"
or
#
until
X'
is displayed.
3.
Key in a value for
X'
and press
!
.
4.
Press
#
to display the
Y'
variable.
5.
Press
%
to compute a predicted
Y'
value.
Computing X'
1.
To select the Statistics worksheet, press
& k
.
2.
Press
"
or
#
until
Y'
is displayed.
3.
Key in a value for
Y'
and press
!
.
4.
Press
"
to display the
X'
variable.
5.
Press
%
to compute an
X'
value.