TRENDING NEWS

POPULAR NEWS

Any Stats Geniuses Out Here

Why aren't there any muscular geniuses?

Well, this guy was a wrestling champion in college and he’s a genius in the traditional sense.So there you go, one muscular genius to contradict your question “Why aren’t there any muscular geniuses”.Would you call Bruce Lee a genius? He had an understanding of his art and a mastery of his body very few attain. He became a precursor in Martial Art and inspired many.Would you call Magnus Carlsen a genius? Chess is very hard to master and Magnus is a fan of skiing and ski jumping. Here he is showing his strong legs.

Statistic problem fast for Genius.?

The variable you're interested in is the combined sale price for both the apples and the potatoes.
The total sale price of the apples, A = (0.5 +/- 0.2)$/lb * 100lb = $50 +/- $20 as a standard deviation.
The total sale price of the potatoes, P = (0.3 +/- 0.1)$/lb * 50lb = $15 +/- $5.
The total income, I, is A + P, or $65 +/- some quantity as a standard deviation.

We assume the market prices are uncorrelated. That is, the variability in A is independent of the variability in P. In that case, the error of the sum is equal to the square root of the sum of the squares of the errors. (There's a formula for the general case, but it involves partial derivatives and I suspect you're not up to calculus yet.)

E = sqrt (15^2 + 5^2) = sqrt (225+25) = sqrt (250) = 15.81

So

a) I = A + P = 100*0.5 + 50*0.3 +/- E
b) The mean is $65
c) The standard deviation is $15.81

How many friends do you need to find a genius?

Genius is considered to be an IQ of 140–145, and that’s about 0.25% of the population.If you do the math, then that means if you know 100 people, there’s a 22% chance that you know a genius. And if you know 200 people, there’s a 39% chance. No matter how many people you know, there is always SOME chance that you don’t know a genius, so it can never be 100%. Here’s a chart:People you know | % chance you know a genius0 | 0%100 | 22%200 | 39%300 | 53%400 | 63%500 | 71%600 | 78%700 | 82%800 | 87%900 | 89%1000 | 92%1100 | 94%1200 | 95%1300 | 96%1400 | 97%1500 | 98%

How do people become geniuses? Are they made by their parents or society or are they born as geniuses?

Typically when people refer to the term "genius" they are referring to intellectual genius, but neglect emotional, social and spiritual intelligences all which have credible benefits.  I believe nurture is just as important as your genetic endowment if not more important and much like years of dedication can turn one into a virtuostic instrumentalist, the same can be said of any field of study, if one is driven enough.   A person is usually recognized as a genius when others are able to observe they have a certain level of understand or ability in a given field, but similar do stats on a character in a video game (World of Warcraft, Final Fantasy, etc) these "stats" of the human mind can increase greatly over time.  Scans of the human brain before and after learning a second language or years of musical training shows a drastic change of topography and density of brain matter. It doesn't hurt to be born with advantages, but cultivation and focus is just as important and can yield comparable results to a person who is gifted.

Help! Any super genius mathematician out there??? Please help me? Statistic problem...?

(a) ANSWER: Pax World Balanced Coefficient of Variation = 1.4666
Vanguard Balanced Index Coefficient of Variation = 1.3858

Why???
In probability theory and statistics, the coefficient of variation (CV) is a normalized measure of dispersion of a probability distribution. It is also known as unitized risk or the variation coefficient.

The coefficient of variation is useful because the standard deviation of data must always be understood in the context of the mean of the data. The coefficient of variation is a dimensionless number. So when comparing between data sets with different units or widely different means, one should use the coefficient of variation for comparison instead of the standard deviation.


(b) ANSWER: Pax World Balanced and Vanguard Balanced Index not less than 75% [(1 - 1/2²)*100] of the values are within k = 2 standard deviations of the mean = 9.58 and mean = 9.02



Why????

Chebyshev's inequality (also known as Tchebysheff's inequality or Chebyshev's theorem)

Pax World Balanced
STANDARD DEVIATION: σ = 14.05

MEAN: μ = 9.58

INTEGER VALUE: k = 2

INTERVAL: [μ − √k * σ, μ + √k * σ] = [9.58 - √2 * 14.05, 9.58 + √2 * 14.05] = [-10.29*, 29.45 ]

*Negative value signifies a loss

Chebyshev's inequality states that not more than 1/k² of the distribution's values can be more than k standard deviations away from the mean. And for this problem, k = 2 which means that not less than 75% [(1 - 1/2²)*100] of the values are within k = 2 standard deviations of the mean = 9.58.

Vanguard Balanced Index
STANDARD DEVIATION: σ = 12.5

MEAN: μ = 9.02

INTEGER VALUE: k = 2

INTERVAL: [μ − √k * σ, μ + √k * σ] = [9.02 - √2 * 12.5, 9.02 + √2 * 12.5] = [-8.66*, 26.7 ]

*Negative value signifies a loss

TRENDING NEWS