10 Statistics 10.1  Prepare the statistical bank 10.2  Enter observations in the right order 10.3  What the six accumulators retain 10.4  Correct or remove an observation 10.5  Means and weighted means 10.6  Sample standard deviations 10.7  Fit a straight line 10.8  Estimate a response and read correlation 10.9  Inspect the totals and preserve useful results 10.10  Statistics worksheets in ALG 10.11  Stack effects, errors, and numerical limits 11 Time Value of Money, Loans, and Savings 11.1  The five financial registers 11.2  Cash signs, periods, and interest rates 11.3  END and BEGIN payment timing 11.4  When an RPN financial key stores and when it solves 11.5  Clearing and preparing a financial problem 11.6  Loan payments and a final balloon 11.7  Present value and a payment budget 11.8  Future value and regular savings 11.9  Solving for the periodic interest rate 11.10  Solving n and interpreting fractional periods 11.11  Amortization: interest, principal, and balance 11.12  TVM and amortization in ALG 11.13  Money rounding, precision, and practical limits 12 Cash Flows, NPV, and IRR 12.1  Amounts at equally spaced times 12.2  Controls and a known starting state 12.3  Entering individual and repeated flows 12.4  Reviewing and replacing stored amounts 12.5  Selecting the prefix with n 12.6  Net present value 12.7  Internal rate of return 12.8  Bounds, multiple roots, and unsuccessful searches 12.9  Cash-flow worksheets in ALG 12.10  Comparing amount and rate results 12.11  Clearing and numerical limits 13 Additional Financial and Date Calculations 13.1  Controls and preparation 13.2  Simple interest on 360- and 365-day bases 13.3  Entering and reading calendar dates 13.4  Adding or subtracting calendar days 13.5  Actual and 30/360 day counts 13.6  Bond inputs and coupon assumptions 13.7  Calculating bond price and yield 13.8  Preparing a depreciation calculation 13.9  Straight line and sum of years’ digits 13.10  Declining balance and straight-line crossover 13.11  Fractional useful lives and rounding 13.12  Financial and date worksheets in ALG 13.13  Retained inputs, results, and error recovery