Questions tagged [percentages]
A percentage is a number or ratio expressed as a fraction of $100$. It is often denoted using the percent sign, "$\%$", or the abbreviation "$\mathrm{pct}$." -Wikipedia. Percentages are used when describing portions or proportional changes.
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I need an equation that will net me 97% of a whole after a 2.9% + 0.30 cent fee [closed]
Say I want to charge my customer 100.00. I need to add a fee on top of the 100.00 so that after a 2.9% credit card fee + 0.30c flat fee is taken from the 100.00, I end up with 97.00 (97%) Net
What ...
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Winning Odds if you Spin 11x - American Roulette
In American Roulette the probability or percentage of you winning on a dozen/column is 31.6% on a single spin/bet of the wheel. What is the probability or percentage of winning on that same doezen/...
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Number of significant digits when computing percentages on prices
I have two numbers total and partial that are always rounded to two decimals as they are prices in currencies that have cents (...
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Formula for converting monthly percentages from a 12 month distribution into x number of months
(Please let me know if this needs any clarification)
I have a client that builds homes and we want to model billings across any project duraction, according to the average monthly percentages from a ...
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What is the correct way to find % variance between two scores?
I want to calculate % variance (or deviation) between two scores ie what was the improvement +- from Score A to Score B. I usually use this below method:
(A-B)/A*% Where A is my original score and B ...
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What would be the best position in pick order when picking a card out of a bowl with one bad card? [duplicate]
Let's say there are 10 people, and each person has to pick a random card out of a bowl consisting of 10 cards; 9 good ones and 1 bad one. I was wondering what position to pick a card from the bowl ...
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How to find the percentage of a group that experienced a change in color.
Okay, let us give an example of what I am talking about. Let us say you have a collection of spheres, the amount doesn't matter, only percentages do.
Let us say they all possess a colour, they will be ...
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Efficiency of ratios
Suppose we have a computer application and we want to calculate the influence of the frequency in the final runtime.
If this application is executed at 2 GHz this takes 1000s, whereas if the ...
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Why does total salary differ over 5 years if the average salary increase averages to the same?
I'm considering 2 general scenarios of both having an average salary increase of 6% over 5 years. But in the first scenario, the person ends up with a lower total salary compared to the second ...
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Percentage of values between 3 standard deviations and 4 standard deviations.
After learning about the empirical rule / $68-95-99.7$ rule, I am just wondering about the percentage of values $4$ standard deviations from the mean.
This question is pretty much the same as the ...
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If I roll 10 dice, each with a 1/3 chance of success, and I need at least 3 successes for the trial to succeed, what is the percent chance of success? [closed]
So a bit of background: I play a TTRPG (like DnD) that uses a D6 system. The system uses 6-sided dice, where a dice counts as an individual success if it rolls a 5 or a 6, so a 1/3 chance of success. ...
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Minimum Population for Rounded Percent Increase.
I recently saw an infographic comparing growth in different government sectors in my home country. The graphic decided to represent growth as whole number percent increases, with no more information ...
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Average item cost [closed]
So let's say I can open up crates that have balls in it, but the amount of balls received from each crate has different percentage probability. As shown bellow:
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Finding the percentage change in the slope with the correct plus or minus symbol.
I am trying to build a formula with the data that I have below. The formula will be embedded in a Arduino sketch.
Column A is the time stamp and Column B is my voltage value. Column C is a threshold ...
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Discrepancy between the average annual return and the actual stock price
I would really appreciate it if somebody can help me with the math on this one. I feel the need to apologize in advance if this errs on the dumb side. If somebody could walk me through this and make ...
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