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Statistics

Statistics deals with collecting, organizing, and interpreting numerical data. An important aspect of statistics is the analysis of population characteristics inferred from sampling.

36,756 Questions

How to use SPSS in time series and forecasting?

we can use timeseries in forecasting future values depending upon current and past values. we can also construct ACF and PACF plots and can know how many spikes are there in linear stationary models.

What does alpha-1 mean in statistics?

Im in statistics class and I been trying to figure out the answer too. I couldn't find it online. Luckily I had the answer to the problem I was trying answer, so to figure out what it was I worked it backwards.

BASICALLY I THINK ITS ANOTHER WAY OF SAYING

(confidence interval)

which for most problems is either

90% 95% 99% or in decimal form is .9 .95 .99

What is integrate mean?

It means to merge or meld two or more things together into one thing.

What is a martingale simple random walk?

Martingale's simple random walk is an algorithm pertaining to the wager system, in which one assumes the course of doubling one's wager in reaction to a win or halves one's wager in reaction to a loss.

So the formula:

( Xn+1 | X0 , ... , Xn )

In this it is supposed that the random variates have a finite constraint (or this equation does not hold up to infinite purposes).

Are there more famous women or men?

YUPPPP! its guy, they have done things like invent sliced bread, cars, planes, trains, pretty much everything we use daily was invented by a dude, sorry ladies. you just ain't that gifted when it comes to inventing useful things

Edit:

Except Ada Lovelace and her work on the analytical engine, now better known as the computer - which the above answerer used to type his response. It has proved useful.

Not to mention the windshield wiper, kevlar, the theory of radioactivity (and the subsequent isolation of radioactive isotopes), COBOL, azidothymidine (AZT, used in the treatment of AIDs and HIV), the feeding tube, and the technique for removing cataracts were all invented/pioneered/discovered by female scientists, doctors, and inventors.

What conditions can the normal cube be used to approximate the binomial distribution?

You need to define one single variable, based on the six possible outcomes, such that the outcome of each trial is either a success or not.

Thus you could define X as "roll a 5" so that the probability of success is 1/6,

Or that X is "roll an even number", so the probability of success is 1/2 , or some other event.

The die need not be fair, but if it is loaded, the loading must not change. This can allow you to increase the range of probabilities of "success".

You then need to roll the die many times and record whether or not your chosen event occurred or not. The number of times the event occurred divided by the number of rolls will approximate a binomial distribution.

What does the position of each digit in a number determine?

It determines how much that digit is worth. See this article on place value. http://www.aaamath.com/plc.htm

What are the first two consecutive numbers after 15?

16 and 17 are the first two consecutive WHOLE numbers. Consecutive has no meaning for the real numbers since a another can be found between any two.

What set of numbers does the number 86 belong to?

It is a natural (or counting) number, a whole number, an integer, a rational number, and a real number.