Oracle Tutoring, Campbell River, BC
(250) 203-6544 (text) or (250) 830-0295 (talk)
The tutor shows a present value example on the Hewlett Packard 10B business calculator. Example: If $100 is received at month end for five years, at annual interest rate 3.2% compounded monthly, what is the total present value of the …
The tutor tells how to convert an angle from degrees to rads, or back, on various Sharps. On the Sharps I know, there is a button that has DRG above it. Pressing 2ndF, then that key, toggles the user between …
Math: trig: converting between degrees and rads on Sharp calculators Read more »
The tutor shows a nice trick to obtain a least squares line using matrix algebra. In my Nov 25 post I mentioned how, with Excel or LibreOffice Calc, to get a best-fit line for x y 0 3 2 5 …
Linear algebra: best fit line: method of least squares by hand Read more »
The tutor shows how to get a graph and equation for data using LibreOffice Calc, in six easy steps. Let’s imagine your x-data is in a1:a5, your y-data, b1:b5. Select the range a1:b5. Click the Chart icon, which looks like …
Spreadsheets: LibreOffice Calc: how to get a graph and equation from data Read more »
The tutor explains, with an example, how to construct a confidence interval for the median. Let’s imagine we have the following data for purchases from a coffee shop, arranged least to greatest: 2.05, 2.05, 2.05, 2.05, 2.05, 2.05, 2.55, 2.55, …
Statistics: a confidence interval for the median Read more »
The tutor shows an example of how to price a bond. Example: Imagine the following scenario: a 20-yr $10K bond pays at 4% per year, compounded and paid semi-annually. However, realizing a present interest rate of only about 2.5%, a …
Math of finance: bond pricing, featuring the TI BA-35 Read more »