HP 30b HP 20b Business Consultant and HP 30b Business Professional User's Guid - Page 81
a*x+b, Table 12-3, Statistics Example, Display, Description, Prediction
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Table 12-3 Statistics Example Keys :y Display 1I1 50I 2I1 65I 3I1 60I 4I1 75I 5I1 70I :z
Statistical Operations
73
Table 12-3
Statistics Example
Keys
Display
Description
:y
Opens Data menu.
1I1
50I
Inputs values for
x
(1)
and
y
(1)
.
2I1
65I
Inputs values for
x
(2)
and
y
(2)
.
3I1
60I
Inputs values for
x
(3)
and
y
(3)
.
4I1
75I
Inputs values for
x
(4)
and
y
(4)
.
5I1
70I
Inputs values for
x
(5)
and
y
(5)
.
:z
Opens Stats menu.
<I
Opens Descriptive sub-menu.
<<
Displays average
y
.
:z<<
I
Opens Predictions sub-menu.
NOTE:
this example performs calculations
based on a linear
(a*x+b)
regression line.
<7I
Inputs
7
as the
Prediction
x
value (month 7).
<=
Calculates
Prediction
y
value (sales at
month 7).