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I would say in America the mean IQ is about 60 and the standard deviation is about 15, this is about true for all ages.

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Q: What is the standard deviation of kids in a family in America in any or all of the last 5 years?
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Can standard deviation equal zero?

Standard deviation can only be zero if all the data points in your set are equal. If all data points are equal, there is no deviation. For example, if all the participants in a survey coincidentally were all 30 years old, then the value of age would be 30 with no deviation. Thus, there would also be no standard deviation.A data set of one point (small sample) will always have a standard deviation of zero, because the one value doesn't deviate from itself at all.!


Z score for philip Seymour Hoffman's age 38 and the mean is 43.8years and a standard deviation of 8.9 years?

5.8


The distribution of ACT scores in recent years has been roughly normal with mean 20.9 and standard deviation 4.4 The quartiles of any distribution are the values with cumulative proportions 0.25 and?

17.7 and 20.9


How to calculate Risk probability?

"Risk probability" does not quite make sense, perhaps you mean just how to calculate risk. There are many formulas and methods, a lot of them highly complex mathematical models. Risk calculation is an important subset of portfolio theory. For the simplest cases, consider some of the following definitions: * the greatest dive that a stock took over a given historical time period. For example, if stock A dropped 30% maximum over past 5 years before rebounding, and stock B dropped 40% maximum over the same period - then by this metric you can see that stock B is riskier. * standard deviation of the returns over a historical time period. Take as your data set the prices a stock assumed over the last 5 years daily. You can calculate the standard deviation of this data set. The standard deviation is a measure of risk.


Assume that life expectancy in the us is normally distributed with a mean of 73 years and a standard deviation of 9 years what is the probability that you will live to be over 100 years old?

You would have about 1/2 of 1 % chance of living to 100 since age 100 is three standard deviations (SD) from the mean. If you are with in three SD of the mean you have 99% of the data set or probablity contained. Hence, you would be missing 1% of which half would be above age 100 and half would be below (73-27) age 46.

Related questions

What is the average age a girl hits puberty also write stander deviation?

The average age is 11 to 12 years of age. Standard deviation is 2 years.


Can standard deviation equal zero?

Standard deviation can only be zero if all the data points in your set are equal. If all data points are equal, there is no deviation. For example, if all the participants in a survey coincidentally were all 30 years old, then the value of age would be 30 with no deviation. Thus, there would also be no standard deviation.A data set of one point (small sample) will always have a standard deviation of zero, because the one value doesn't deviate from itself at all.!


Z score for philip Seymour Hoffman's age 38 and the mean is 43.8years and a standard deviation of 8.9 years?

5.8


Suppose lifetime of certain type of car batteries are normally distributed. Brand A has a mean lifetime of three years and a standard deviation of six months. Brand B has a mean lifetime of 36 months and a standard deviation of four months?

Brand A


The longevity of people living in a certain locality has a standard deviation of 14 years what is the mean longevity if 30 percent of the people live longer than 75 years?

67.65


What is the approximate standard deviation of returns if over the past four years an investment returned 8.0 percent 12.0 percent 12 percent and 15.0 percent?

s


What was the typical voting standard in Colonial America?

Colonial America - after the American RevolutionThe typical -- and only -- voting standard in Colonial America were the criteria of Free, White, Male, over age 21 years old.


The ages (in years) of the employees at a particular computer store are the following.32, 27, 38, 43, 40Assuming that these ages constitute an entire population, find the standard deviation of the population?

43


What are some secrets for picking a mutual fund?

Some secrets to picking a mutual fund include analyzing the risk (or standard deviation of the fund) as well as the return of the fund over 1 year, 3 years, 5 years, and 10 years intervals.


A survey of 35 students of a university showed a sample mean age of 21.7 with a standard deviation of 3.1 years What is the point estimate of the students' mean age?

It is the sample mean age of 21.7.


The distribution of ACT scores in recent years has been roughly normal with mean 20.9 and standard deviation 4.4 The quartiles of any distribution are the values with cumulative proportions 0.25 and?

17.7 and 20.9


Which deviation option is generally issued for two years?

waiver