1i1 50i, 2i1 65i, 3i1 60i – HP 30b Business Professional Calculator User Manual
Page 81: 4i1 75i, 5i1 70i, Z<< i
Advertising
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).
Advertising