Financial Analytics - Interest Rate calculation

Interest Rate calculation

Simple Interest = PtR/100 

P= Principal

t=Time Period

R = Rate of Interest

Compound Interest over T :

A = P(1 + r/n)nt

• A = Accrued amount (principal + interest)
• P = Principal amount
• r = Annual nominal interest rate as a decimal
• R = Annual nominal interest rate as a percent
• r = R/100
• n = number of compounding periods per unit of time
• t = time in decimal years; e.g., 6 months is calculated as 0.5 years. Divide your partial year number of months by 12 to get the decimal years.
• I = Interest amount
• ln = natural logarithm, used in formulas below

Continuous Compounding :

𝐴=𝑃𝑒𝑟𝑡

P&L = V(T) - V(0)

Gross Return = V(T)/V(0)

Return = P&L/V(0)

Return = Gross Return -1

Annualized Return (Average of Returns over a period T)

(1+Row) Pow T = V(T)/V(0)

Row = (V(T)/V(0))Pow 1/T -1

Dave Ramsey's Rants

Flying Turkey

    Just because you see a turkey flying in a tornado doesn’t mean turkeys can fly.

    your ways of handling money have to work in good times and in bad.

About Savings

     Savings without a mission is garbage. Your money needs to work for you, not lie around.

    Winning at money is 80 percent behavior and 20 percent head knowledge.

Denial

90 percent of solving a problem is realizing there is one. Focused intensity, life-or-death intensity, is required for you to reset your money-spending patterns, and one of your biggest obstacles is DENIAL.

Be Strong - This is funny

For your own good, for the good of your family and your future, grow a backbone. When something is wrong, stand up and say it is wrong, and don’t back down.

Frog Legs Story :

The story goes that if you drop a frog into boiling water, he will sense the pain and immediately jump out. However, if you put a frog in room-temperature water, he will swim around happily, and as you gradually turn the water up to boiling, the frog will not sense the change. The frog is lured to his death by gradual change. We can lose our health, our fitness, and our wealth gradually, one day at a time. It might be a cliché, but that’s because it is true: The enemy of “the best” is not “the worst.” The enemy of “the best” is “just fine.

Few people have the courage to seek out change.

Debt and Other Fancies

    It is human nature to want it and want it now; it is also a sign of immaturity. Being willing to delay pleasure for a greater result is a sign of maturity

Myth: Debt is a tool and should be used to create prosperity. 

Truth: Debt adds considerable risk, most often doesn’t bring prosperity, and isn’t used by wealthy people nearly as much as we are led to believe.

Joining the Lie - Human Nature / Acceptance Club :

I have heard it said that if you tell a lie often enough, loudly enough, and long enough, the myth will become accepted as a fact. Repetition, volume, and longevity will twist and turn a myth, or a lie, into a commonly accepted way of doing things. Entire populations have been lulled into the approval of ghastly deeds and even participation in them by gradually moving from the truth to a lie. Throughout history, twisted logic, rationalization, and incremental changes have allowed normally intelligent people to be party to ridiculous things. Propaganda, in particular, played a big part in allowing these things to happen

When we participate in what the crowd identifies as normal, even if it is stupid, we gain acceptance into the club. Sometimes we don’t even realize what we are doing is stupid because we have been taught that it’s just “the way you do it,” and so we never ask why. As we participate in the myth, we learn to spout the principles of the myth. After the years go by and we have invested more money and time into the myth, we become great disciples and can preach the points of the myth with great fervor and volume. We become such experts on the myth that we can sell others on joining the lie. I once joined in the lie, but no more.

Don’t Let the Monkeys Pull You Down!

A group of monkeys were locked in a room with a pole at the center. Some luscious, ripe bananas were placed on top of the pole. When a monkey would begin to climb the pole, the experimenters would knock him off with a blast of water from a fire hose. Each time a monkey would climb, off he would go, until all the monkeys had been knocked off repeatedly, thus learning that the climb was hopeless. The experimenters then observed that the other primates would pull down any monkey trying to climb. They replaced a single monkey with one who didn’t know the system. As soon as the new guy tried to climb, the others would pull him down and punish him for trying. One by one, each monkey was replaced and the scene repeated until there were no monkeys left in the room that had experienced the fire hose. Still, none of the new guys were allowed to climb. The other monkeys pulled them down. Not one monkey in the room knew why, but none were allowed to get the bananas. 

We aren’t monkeys, but sometimes we exhibit behavior that seems rather chimplike. We don’t even remember why; we just know that debt is needed to win. So when a loved one decides to get a Total Money Makeover, we laugh, get angry, and pull him down.

Dont fall for the Lie

We bought the lie! We lived our lives according to the standards set to “keep up with the Joneses.” Turns out they were broke and living in debt too. 

Rumi On God

Ultimate goal of meditation. So beautifully articulated.

Java Arrays

Copy Elements of Array into new Array :

Arrays.copyOfRange(sourceArray, i, i+3)

This will copy 3 elements from the location i into new Arrays

Character Arrays :

Remove punctuation from String :

1) Convert String into char Array

char[] charArr = str.toCharArray()

StringBuilder sbr = new StringBuilder();

for(i=0;i
if(charArr[i].isLetterOrDigit()) {

            sbr.append(charArr[i])

}

}

sbr.toString() // will print this will all punctuation removed.

Conflict Resolution - PMI ACP

Some of my fav Quotes :

There is what happened and the "STORY" about what happened.

Be hard on the problem & Soft on the person

Solution is not to blame or shame

Frame the issue to find some middle ground

You as a "Team Lead or Project Manger" is only as strong as your weakest link

"Silence is Power" - This will let the other person give up more

Always have your BATNA ready - Best Alternative to Negotiating Agreement

There is always 3 things involved in a conflict

1) Perception
2) Communication
3) Emotions

Dealing with Difficult People

Conflict Resolution Framework

Best Practices of Conflict Resolution

Git - Overwrite Master to different branch

git checkout feature_branch
git merge -s ours --no-commit master
git commit      # Add a message regarding the replacement that you just did
git checkout master
git merge feature_branch

Master was behind by several versions
and bring it up-to date

Fav Quotes

Food For Thought

One Machine can do the work of 50 Ordinary Men
No Machine can do the work of one Extraordinary Man!


Success is a lousy teacher
It seduces smart people into thinking they can't loose ! - Bill Gates