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How do you keep the mean the same but increase the standard deviation of a set of numbers?
Wiki User
∙ 14y ago
Subtract 10 (or any other amount) from the smallest member of the group. Then add 10 (or the same amount as above) from the largest member of the group.
Wiki User
∙ 14y ago
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Why does the formula for standard deviation have a square root in it?
The formula for standard deviation has both a square (which is a power of 2) and a square-root (a power of 1/2). Both must be there to balance each other, to keep the standard deviation value's magnitude similar to (having the same units as) the sample numbers from which it's calculated. If either is removed from the formula, the resulting standard deviation value will have different units, reducing its usefulness as a meaningful statistic.
Why should you keep the prism in minimum deviation position?
f a line is drawn parallel to the angle of incidence axis (X-axis), it cuts the graph at two points, showing that there are two values of angle of incidence for an angle of deviation. However, at the point of angle of minimum deviation, the line will be tangent to the curve showing that for minimum angle of deviation there is only one angle of incidence.
How do you make an expanded form into a standard form?
Take the expanded form for example 900+40+6 and make it 946. Take the first number from each set of numbers and write it and keep going until all of them are complete
What is the set of numbers that can be substituted for the variable and keep the sentence true?
solution set
What numbers are divisible by 38475?
38475, 76950, 115425 and keep adding 38475 forever.
Why does the formula for standard deviation have a square root in it?
The formula for standard deviation has both a square (which is a power of 2) and a square-root (a power of 1/2). Both must be there to balance each other, to keep the standard deviation value's magnitude similar to (having the same units as) the sample numbers from which it's calculated. If either is removed from the formula, the resulting standard deviation value will have different units, reducing its usefulness as a meaningful statistic.
Why is it that only one normal distribution table is needed to find any probability under the normal curve?
Anything that is normally distributed has certain properties. One is that the bulk of scores will be near the mean and the farther from the mean you are, the less common the score. Specifically, about 68% of anything that is normally distributed falls within one standard deviation of the mean. That means that 68% of IQ scores fall between 85 and 115 (the mean being 100 and standard deviation being 15) AND 68% of adult male heights fall between 65 and 75 inches (the mean being 70 and I am estimating a standard deviation of 5). Basically, even though the means and standard deviations change, something that is normally distributed will keep these probabilities (relative to the mean and standard deviation). By standardizing these numbers (changing the mean to 0 and the standard deviation to 1) we can use one table to find the probabilities for anything that is normally distributed.
Do the numbers increase forever?
yes. Numbers never stop. They keep going and going. This is called google
Why is the standard deviation of a distribution of means smaller than the standard deviation of the population from which it was derived?
The reason the standard deviation of a distribution of means is smaller than the standard deviation of the population from which it was derived is actually quite logical. Keep in mind that standard deviation is the square root of variance. Variance is quite simply an expression of the variation among values in the population. Each of the means within the distribution of means is comprised of a sample of values taken randomly from the population. While it is possible for a random sample of multiple values to have come from one extreme or the other of the population distribution, it is unlikely. Generally, each sample will consist of some values on the lower end of the distribution, some from the higher end, and most from near the middle. In most cases, the values (both extremes and middle values) within each sample will balance out and average out to somewhere toward the middle of the population distribution. So the mean of each sample is likely to be close to the mean of the population and unlikely to be extreme in either direction. Because the majority of the means in a distribution of means will fall closer to the population mean than many of the individual values in the population, there is less variation among the distribution of means than among individual values in the population from which it was derived. Because there is less variation, the variance is lower, and thus, the square root of the variance - the standard deviation of the distribution of means - is less than the standard deviation of the population from which it was derived.
How do you delete your own deviations on deviantart?
Go to your deviation and on the side (where it says 'Add Deviation to Favs') at the bottom there is edit deviation and under is delete.just click on delete to do so.Though keep in mind you can only delete one deviation at a time.There isn't a way to delete more than one quickly.
Uses of quartile deviation?
This helps to show where things may not follow the norm. Quartiles help you to keep data organized and so a deviation would show how it would vary.
Are snakes incresing in numbers in the wild?
I think they are decreasing nowadays. Increase in numbers in living beings in the world is only in human beings.The rest keep decreasing ,the reason being human beings and their ways.
When finding LCM do you have to keep going up using big numbers?
If you use the "list the multiples" method of finding the LCM, it is likely that the lists and the size of the numbers on the list will increase as the numbers you are comparing get larger. If you learn the "prime factorization" method, you can avoid that.
Why should you keep the prism in minimum deviation position?
f a line is drawn parallel to the angle of incidence axis (X-axis), it cuts the graph at two points, showing that there are two values of angle of incidence for an angle of deviation. However, at the point of angle of minimum deviation, the line will be tangent to the curve showing that for minimum angle of deviation there is only one angle of incidence.
What is a pay increase to keep up with inflation called?
Cost-of-living increase.
What numbers would you have to have for mass and force to keep the greatest acceleration?
To maintain acceleration, both mass and force must remain unchanged. Decreasing mass and/or increasing force will increase acceleration.
An increase in temperature will the attenuation of a cable?
Basically we should also keep in mind knowledge about voltage and current. If we keep voltage constant then by increase in temperature also increase the attenuation, if we keep current constant then attenuation drops by increasing temperature.
