Many textbooks and courses teach an imprecise method for calculating percentiles. Their method may or may not fit the definition of percentile, but it results in a ragged graph, which implies that error has been introduced into the results.
This glossary is always under construction, so bookmark it and come back often.
This is an attempt to define financial management terminology to people with no background in financial management, so there is much more to the story than what is shown below. Emphasis is on brevity and clarity to the detriment of detail and depth.
agent – someone who acts on behalf of another person (that other person is called the principal)
annual percentage interest rate – the annual interest rate that is quoted, but compounding may raise yield above this rate (also see effective interest rate)
annuity – a series of payments made at regular intervals
annuity due – a series of payments made at regular intervals; payments are made at the beginning of each interval (also see ordinary annuity)
APR – annual percentage interest rate
compounding period – the length of time between interest calculations (e.g., monthly, quarterly, annually)
continuous compounding – interest is calculated instant by instant
consol – short for consolidated annuities; perpetual bonds that were issued by the UK from 1751 to 1927; as at 2015.07.05, they no longer exist
effective annual interest rate – the annual interest rate that would be charged if interest were compounded annually (also see annual percentage interest rate)
efficient stock market – prices reflect all available public information and adjust rapidly to newly released information
future value – the value in terms of some future dollar of cashflows that happened before that date
market – a place (online or real world) where people buy and sell
ordinary annuity – a series of payments made at regular intervals; payments are made at the end of each interval (also see annuity due)
perpetuity bond – bonds with no maturity date; principal is never paid back, but interest is paid forever on a regular basis
present value – the value in terms of today’s dollar of cashflows that will happen in the future
principal – a person for whom an agent acts
stakeholder – a group or person who is affected by management decisions or who has an interest in a matter
stock market – a place (online or real world) where people buy and sell stocks
stripped bond – a bond that does not pay interest on a regular basis; interest may or may not be paid on the maturity date (also see zero coupon bond)
time value of money – a concept that tells us that a dollar today is of more value than a dollar next year
zero coupon bond – a bond that does not pay interest on a regular basis; interest may or may not be paid on the maturity date (also see stripped bond)
These are tongue twisters I heard decades ago (pre-1980). They are in their original form, except for the parts in brackets, which I added, and the parts in braces, which I heard more recently.
This is a quick summary of the American Psychiatric Association’s style guide, which is used in the social sciences at many universities. Continue reading
The multiplication method taught in school requires more writing than necessary when multiplying by 11. It slows us down.
Consider multiplying 1234512345 by 11. Here’s the way we were taught in school:
Most people know that Queen Victoria is the longest reigning British Monarch. Many people also realize that Her Majesty, Queen Elizabeth II, is close to breaking that record. Continue reading
I decided to play with sourdough breadmaking, so I read a lot of webpages to get up to speed on the basic concepts. That’s when I discovered there are a lot of opinions about making sourdough starter.
This is a journal of my sourdough adventure. Continue reading