User Manual

R
5
-R
.3
: Unused
1. Key in the program, (Note: If the average cost are not going to be calculated, lines 25
through 48 need not be keyed in).
2. To calculate r, the learning factor, if C
1
and C
n
are known:
a. Key in C
1
, the cost of the first unit and press .
b. Key in C
n
, the cost of the nth unit and press .
c. Key in n, the number of units and press
to calculate r the learning factor.
3. To calculate the cost of the nth unit when C
1
and r are known:
a. Key in C
1
and press 1. Key in r and press 2. (Note: This step may be
skipped if step 2 has just been done).
b. Key in the number of units, n and calculate C
n
, the cost of the nth unit by
pressing
16 .
4. To calculate the average cost per unit of the ith through jth unit, C
ij
, if C
1
and r are known.
a. Key in C
1
and press 1. Key in r and press 2. (Note: This step may be
skipped if step 2 has just been done).
b. Key in the number of the last unit of the batch, j and press
.
c. Key in the number of the first unit of the batch, i, and calculate the average cost
per unit by pressing
25 .
Example 2: The electronic manufacturer cited in example 1 found that the 100th
instrument actually cost $395 to manufacture. Find the actual learning factor, r,
the cost of the 500th unit and the average cost of units 500 thru 1000. (Recall
that C
1
was $875).
Keystrokes Display
875
875.00
395
395.00
100
0.89
Actual r.
500 16
299.14 Cost of the 500th unit.
1000
1000.00
500 25
280.00 Average cost of the 500th thru 1000th unit.