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HP 12C Solutions Handbook
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103
Logarithmic Curve Fit
If your dat
a does not fit a line or an
expo
nential curve, tr
y the following
logarithmic curve fit. This is ca
lculated according to
the equation
y
=
A
+
B
(ln
x
), and all
x
values must be positive.
A typical logarithmic curve is shown below
.
The proc
edure is as fo
llows:
27.34
A
0.31
B
0.36
Effective growth
rate.
7
232.35
Projected price at
the end of year 7
(1982).
103
105
Table of Contents
Real Estate
3
Refinancing
3
To Find the Benefits to both Borrower and Lender
3
Wrap-Around Mortgage
4
Income Property Cash Flow Analysis
8
Before-Tax Cash Flows
8
Before-Tax Reversions (Resale Proceeds)
9
After-Tax Cash Flows
10
After-Tax Net Cash Proceeds of Resale
16
Lending
21
Loan with a Constant Amount Paid Towards Principal
21
Loan Reduction Schedule
21
Add-On Interest Rate Converted to APR
22
APR Converted to Add-On Interest Rate
23
Add-On Rate Loan with Credit Life
24
Interest Rebate - Rule of 78'S
28
Graduated Payment Mortgages
30
Variable Rate Mortgages
35
Skipped Payments
37
Savings
39
Initial Deposit with Periodic Deposits
39
Number of Periods to Deplete a Savings Account or to Reach a Specified Balance
40
Periodic Deposits and Withdrawals
40
The Cash Flow Diagram
41
Savings Account Compounded Daily
42
Compounding Periods Different from Payment Periods
45
Investment Analysis
48
Lease Vs. Purchase
48
Registers
50
Break-Even Analysis
53
To Calculate the Break-Even Volume
54
To Calculate the Gross Profit at a Given Volume
54
To Calculate the Sales Volume Needed to Achieve a Specified Gross Profit
55
To Calculate the Required Sales Price to Achieve a Given Gross Profit at a Specified Sales Volume
55
Operating Leverage
58
Profit and Loss Analysis
60
Securities
66
After-Tax Yield
66
Discounted Notes
68
Forecasting
72
Simple Moving Average
72
Seasonal Variation Factors Based on Centered Moving Averages
77
Forecasting with Exponential Smoothing
88
Selecting the "Best" Smoothing Constant
91
Pricing Calculations
94
Markup and Margin Calculations
94
Calculations of List and Net Prices with Discounts
96
Statistics
100
Curve Fitting
100
Exponential Curve Fit
100
Logarithmic Curve Fit
104
Power Curve Fit
106
Standard Error of the Mean
107
Mean, Standard Deviation, Standard Error for Grouped Data
108
Chi-Square Statistics
111
Normal Distribution
114
Covariance
118
Permutation
120
Combination
122
Random Number Generator
123
Personal Finance
125
Homeowners Monthly Payment Estimator
125
Tax-Free Individual Retirement (IRA) of Keogh Plan
128
Stock Portfolio Evaluation and Analysis
131
Canadian Mortgages
137
Periodic Payment Amount
137
Number of Periodic Payments to Fully Amortize a Mortgage
138
Effective Interest Rate (Yield)
138
Balance Remaining at End of Specified Period
138
Miscellaneous
140
Learning Curve for Manufacturing Costs
140
Queuing and Waiting Theory
144
Loans with a Constant Amount Paid Towards Principal
152
Add-On Interest Rate to APR
152
Add-On to APR with Credit Life
152
Seasonal Variation Factors Based on a Centered Moving Average
156
Calculations of List and Net Prices with Discounts
160
Exponential Curve Fit
160
Power Curve Fit
161
Portfolio Beta Coefficient
163
Graduated Payment Mortgage
164
Other manuals for HP 12C
User Guide
278 pages
Instructions For Use
6 pages
Quick Start Guide
3 pages
User Manual
5 pages
Instruction Manual
6 pages
Instruction Guide
5 pages
4
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HP 12C Specifications
General
Brand
HP
Model
12C
Category
Calculator
Language
English
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