HP 15c - 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
´ 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
´ 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.