N

N key, 32

natural exponent: e to the power of x key, 23

nCr, 27

negative numbers, 16 net future value, 43 net present value, 43 net uniform series, 43 nPr, 27

NPV: key, 42

NPV, IRR: menu items, 43 number entry, 16

number period: compounding, 55

number periods: amortization, 33

numbers: rounding, 28; storing and recalling, 27

O

off: calculator off, 7

Off: key, 7

on: calculator on, 7

On: key, 7

P

P/YR: key, 32

parentheses: use in Chain mode, 17

parentheses (swap and roll down): keys in RPN, 21

payback, 43

percent calculation: % calc key, 53

percentage: % key, 28 percentage of total, 53 percentages: simple, 28 periodic payment: PMT key, 32 PI. See Math Menu population, 61

power functions, 23

Predictions: sub-menu. See Statistics

present value: PV key, 32

price: break-even, 51; face value. See bonds; percent calculation, 54

principal, 33 probability, 25

product: x and y values, 63 profit, 51

Q

quantity: break-even, 52

R

radians, 9

random function: RAND key, 23 recall arithmetic, 28

recalling numbers: RCL key, 27

reciprocal: 1/x key, 23 regression line, 61 remaining book value, 58 remaining depreciable value, 58 Reset: key, 13

roll down. See RPN

rounding numbers: RND key, 23

RPN: Reverse Polish Notation, 18 RPN stack, 18

S

S.E. SamP.X and Y, 61 salvage: depreciation, 58 scientific notation: EEX key, 16 scroll: up and down arrow keys, 8 semiannual: bond, 47

Sigma X,Y, 61

sign: positive, negative key, 16

sine: SIN key, 23 slope, 61

square of x: key, 23 square root key, 23 standard deviation, 61 start: amortization period, 33 start date: depreciation, 58

Index

statistics: menu items, 62; one-variable, 61; one-variable weighted, 61; Stats key, 61; two-variable, 61

statistics example, 63 stats menu, 61

storing numbers: STO key, 27 student, 25

sums: sub-menu. See Statistics swap. See RPN

symbol: battery, 7

T

tangent: TAN key, 23 thousands separator, 9

time value of money: keys, 32

top line: display, 8

total: cash flows, 43

TVM: example, 32; storing and recalling numbers, 28

U

up arrow key. See scroll

X

x:Sigma, 62; square of Sigma x, 63; times payment per year, xP/YR key, 32

x mean, 62

x mean sample, 62

x population Std. Dev., 62 x prediction, 62

x standard deviation, 62

Y

y:Sigma, 63; square of Sigma y, 63 y mean, 62

y mean sample, 62

y population Std. Dev., 62 y prediction, 62

y standard deviation, 62 y to the x power, 23 y-intercept, 61

75

Page 75
Image 75
HP 20B manual Off calculator off