HP 15c User Manual
Page 115
Section 4: Using Matrix Operations
115
Keystrokes
Display
´>6
018-42,16, 6
Calculates residuals of fit in B.
´>8
019-42,16, 8
|x
020- 43 11
Calculates Res SS.
lmA
021-45,23,11
-
022 30
÷
023- 10
Calculates σ
2
estimate.
v
024- 36
v
025- 36
l>C
026-45,16,13
´<C
027-42,26,13
÷
028- 10
Calculates covariance matrix in C.
|(
029- 43 33
l>B
030-45,16,12
´>8
031-42,16, 8
|x
032- 43 11
-
033- 30
Calculates Reg SS.
|K
034- 43 36
Returns Res SS.
|n
035- 43 32
´bB
036-42,21,12
Subroutines to reconstruct
dependent variable data.
l>A
037-45,16,11
l>Á
038-45,16,14
”
039- 16
´<B
040-42,26,12
´>6
041-42,16, 6
Calculates B = B + AD.
l>Á
042-45,16,14
”
043- 16
|n
044- 43 32
Labels used: A and B.
Registers used: R
0
and R
1
.
Matrices used: A, B, C, and D.
To use this program:
1. Press 1 ´m% to reserve registers R
0
and R
1
.
2. Dimension matrix A according to the number of observations n and the number of
parameters p by pressing n v p ´mA.
3. Dimension matrix B according to the number of observations n (and one column) by
pressing n v 1 ´mB.