How do you derive the mean deviation about the mean of the pareto type 1 distributions?
Easy.
The mean deviation about the mean, for any distribution, MUST be 0.
Which measure of central tendency works best when you have an outlier?
The median, as long as you don't want to do any serious statistical testing.
What is the one 9 digit delectable number which can be made using the digits 1 to 9?
A delectable number has nine digits, using the numbers 1-9 once in each digit. The first digit of a delectable number must be divisible by one. The first and second digits must be divisible by two, the first through third must be divisible by three, etc.
There has only been one delectable number discovered: 381654729.
What are all of the populations of different species that live and interact in an area?
A Community.
Several populations make up a community. Communities interact with the non-living world around and make up an eco-system.
A perfect positive correlation would be exactly 1; 1.00 means "0.995 or higher", which is quite strong indeed.
== == In diagnostic ultrasound axial resolution is influenced by a number of factors including transmission pulse length and frequency of the probe. For best axial resolution short pulses are used - long pulses can potentially improve the signal to noise ratio but their use often results in "range side lobes", effectively a reduction in axial resolution.
Pulse repetition frequency (PRF) is a separate issue to axial resolution however high frequency probes are able to have a higher PRF (resulting in higher frame rates) than low frequency probes due to the higher rate of absorption of the higher frequency signals.
Why do you use mean median and mode?
Together they tell you more about a series of numbers that any one of them.
mean - average
median - middle number if the numbers are listed from smallest to largest
mode - most common number
If your mean and median are close to one another, the statistical distribution is usually fairly good. Likewise, if the mode is close to the mean and median, it gives more verification that the distribution is a nice bell curve. The mode is probably the least useful of the three, as it assumes that there are many repeating numbers. In many actual situations, there aren't enough repeating numbers to make the mode of any value.
What the z-score of a person with a raw score of 20?
There is not enough information to answer your question. To determine a Z-Score, the mean and standard deviation is also required.
I have a data set and need to find the uncertainty of the values how do you do it?
A set of data is typically a set of numerical values. From this set you can calculate various other numbers which have meaning, like the average and range. These are callled statistics.
If it can be assumed that this set of data is taken from a large population (a sample), then we can make statement of probability regarding the population. For instance, the mean of the population is between x and y with a probability of 50%, based on the sample and other assumptlions.
I've included a couple of links that should help. If I failed to anwer your question, please clarify what you mean by "uncertainty of the values."
How many 3 number combinations can be made with 8 numbers?
Assuming that the eight numbers are all different and that none of them are zero, the number of combinations is 8C3 = 8!/(3!*5!) where n! = 1*2*3*...*n
the number is 8*7*6 / (3*2*1) = 56
Why is the number 12 not matter but 12 marbles are matter?
because 12 is a number and marbles are things which is matter.
* * * * *
In much the same way as your thought about a marble is not matter - it is simply a concept in your mind. But a marble is matter.
How many kilometer are there in 2 migameter?
There is no such thing as a migametre.
A megametre, is 1000 kilometres, although it is seldom used. 2 megametres would, therefore, be 2000 km.
x-coordinator
What is the probability of getting a 2 3 or 12 on two dice?
Total number of possibilities on two dice = 36.
Number of ways to get 2, 3, or 12 = 4.
1, 1
1, 2
2, 1
6, 6
Probability = 4/36 = 1 chance in 9 = 0.111 = 11.1%
Since there is only one number given, it is impossible to work out the range.
Difference between economics of scale and diseconomics of scale?
I assume you mean economies of scale and diseconomies of scale.
Economies of scale are the benefits of lower average costs gained by a firm because it is large. Economies of scale can include things like the bulk buying of raw materials etc.
Diseconomies of scale happen when a firm becomes too large for its own good and becomes inefficient, therefore resulting in higher average costs.
How many digits in numeric system?
It varies depending on the base you are using. The standard is the decimal system (because of the 10 fingers on our hands) 0-9. Some other used systems (especially for computers) are binary 2, octal 8, hexadecimal 16 using the digits: 0-9,A-F.