Random number generator selectively. Excel Random Number Generator in Functions and Data Analysis

Various lotteries, sweepstakes, etc. are often held in many groups or publics in, etc., and are used by account owners to attract new audiences to the community.

The result of such drawings often depends on the user's luck, since the recipient of the prize is determined randomly.

To make this determination, lottery organizers almost always use an online or pre-installed random number generator that is distributed free of charge.

Choice

Quite often, choosing such a generator can be difficult, since their functionality is quite different - for some it is significantly limited, for others it is quite wide.

A fairly large number of such services are being implemented, but the difficulty is that they differ in scope.

Many, for example, are tied by their functionality to a specific social network (for example, many generator applications only work with links from this one).

The simplest generators simply randomly determine a number within a given range.

This is convenient because it does not associate the result with a specific post, which means it can be used for sweepstakes outside the social network and in various other situations.

They essentially have no other use.

Advice! When choosing the most suitable generator, it is important to consider what it will be used for.

Specifications

For the fastest process of choosing the optimal online service for generating random numbers, the table below shows the main technical characteristics and functionality of such applications.

All applications discussed in the table are described in more detail below.

RandStuff

You can use this application online by following the link to its official website http://randstuff.ru/number/.

This is a simple random number generator, characterized by fast and stable operation.

It is successfully implemented both in the format of a separate stand-alone application on the official website, and as an application in .

The peculiarity of this service is that it can select a random number both from a specified range and from a specific list of numbers that can be specified on the site.

• Stable and fast work;
• Lack of direct connection to a social network;
• You can select one or several numbers;
• You can only choose among the specified numbers.

User reviews about this application are as follows: “We determine winners in VKontakte groups through this service. Thank you,” “You are the best,” “I only use this service.”

Cast Lots

This application is a simple function generator, implemented on the official website in the form of a VKontakte application.

There is also a generator widget for inserting into your website.

The main difference from the previous described application is that this allows you to disable the repetition of the result.

That is, when carrying out several generations in a row in one session, the number will not be repeated.

• Availability of a widget for inserting into a website or blog;
• Ability to disable result repetition;
• The presence of the “even more randomness” function, after activation of which the selection algorithm changes.

User reviews are as follows: “It works stably, it’s quite convenient to use”, “Convenient functionality”, “I only use this service”.

Random number

We have a sequence of numbers consisting of practically independent elements that obey a given distribution. As a rule, uniform distribution.

You can generate random numbers in Excel in different ways and ways. Let's consider only the best of them.

Random Number Function in Excel

1. The RAND function returns a random, uniformly distributed real number. It will be less than 1, greater than or equal to 0.
2. The RANDBETWEEN function returns a random integer.

Let's look at their use with examples.

Sampling random numbers using RAND

This function requires no arguments (RAND()).

To generate a random real number in the range from 1 to 5, for example, use the following formula: =RAND()*(5-1)+1.

The returned random number is distributed uniformly over the interval.

Each time the worksheet is calculated or the value in any cell in the worksheet changes, a new random number is returned. If you want to save the generated population, you can replace the formula with its value.

1. Click on the cell with a random number.
2. In the formula bar, select the formula.
3. Press F9. AND ENTER.

Let's check the uniformity of the distribution of random numbers from the first sample using a distribution histogram.

The range of vertical values ​​is frequency. Horizontal - “pockets”.

RANDBETWEEN function

The syntax for the RANDBETWEEN function is (lower bound; upper bound). The first argument must be less than the second. Otherwise the function will throw an error. The boundaries are assumed to be integers. The formula discards the fractional part.

Example of using the function:

Random numbers with precision 0.1 and 0.01:

How to make a random number generator in Excel

Let's make a random number generator that generates a value from a certain range. We use a formula like: =INDEX(A1:A10,INTEGER(RAND()*10)+1).

Let's make a random number generator in the range from 0 to 100 in steps of 10.

You need to select 2 random ones from the list of text values. Using the RAND function, we compare text values ​​in the range A1:A7 with random numbers.

Let's use the INDEX function to select two random text values ​​from the original list.

To select one random value from the list, use the following formula: =INDEX(A1:A7,RANDBETWEEN(1,COUNT(A1:A7))).

Normal distribution random number generator

The RAND and RANDBETWEEN functions produce random numbers with a uniform distribution. Any value with the same probability can fall into the lower limit of the requested range and into the upper one. This results in a huge spread from the target value.

A normal distribution implies that most of the generated numbers are close to the target number. Let's adjust the RANDBETWEEN formula and create a data array with a normal distribution.

The cost of product X is 100 rubles. The entire batch produced follows a normal distribution. A random variable also follows a normal probability distribution.

Under such conditions, the average value of the range is 100 rubles. Let's generate an array and build a graph with a normal distribution with a standard deviation of 1.5 rubles.

We use the function: =NORMINV(RAND();100;1.5).

Excel calculated which values ​​were within the probability range. Since the probability of producing a product with a cost of 100 rubles is maximum, the formula shows values ​​close to 100 more often than others.

Let's move on to plotting the graph. First you need to create a table with categories. To do this, we divide the array into periods:

Based on the data obtained, we can generate a diagram with a normal distribution. The value axis is the number of variables in the interval, the category axis is periods.

An online number generator is a fairly simple and convenient auxiliary service for determining a sequence of random numbers. “Numbers rule the world,” Pythagoras once said. Even in ancient times, people believed in the magic of numbers. This is how the science of numerology emerged. Numbers bring people both joy and sorrow.
We have developed a random number generator so that it will certainly make every user happy.

Content:

What is the random selection program based on?

Random - translated from English as “random”. Very often, by magical coincidence, unintentionally selected numbers turn out to be the number of a lottery ticket, your number on the list of participants in the competition.

Where is random selection used?

Numerical randomness has become widespread:
in the lottery business
among fans of casinos, hippodromes, and various sports competitions
in holding social competitions. networks

Online random number drawing ensures a fair selection of the winner.

Using our service in lotteries, you can participate in such projects as Gosloto 5 out of 36, 7 out of 49, Stoloto and others. Casino fans will also appreciate our online generator.

Unfortunately, the human brain is often capable of duplicating information, and sometimes it is difficult to come up with a new combination. The random number generator will tell you how to win the desired prize.

How to choose a number generator

There are many similar services offered online, but there are 5 reasons to choose an RNG random number generator on the Supergenerators website:

• simplicity and ease of use
• wide range of numbers
• convenience of the mobile version
• no specific connection to social networks
• clear instructions, specific interface

4 steps to success with our randomizer:

1. Designate the numeric range in which you want to sample
2. Determine the desired number of output numbers
3. Click the “Generate” button
4. Copy the answer you received and jump to the ceiling with joy!

With the Super Number Generator there will be more successful moments in your life!
Thank you for choosing our free online service.
We are always happy to help you and your friends!

The random number generator for lottery tickets is provided free of charge in an “as is” format. The developer does not bear any responsibility for material and non-material losses of script users. You may use this service at your own risk. However, no matter what, you definitely don’t want to take risks :-).

Random numbers for online lottery tickets

This software (RNG in JS) is a pseudo-random number generator implemented using the Javascript programming language. The generator produces a uniform distribution of random numbers.

This allows you to knock out a “wedge with a wedge” on the RNG with a uniform distribution from the lottery company to respond with random numbers with a uniform distribution. This approach eliminates the subjectivity of the player, since people have certain preferences in choosing numbers and numbers (Birthdays of relatives, memorable dates, years, etc.), which affect the selection of numbers manually.

The free tool helps players select random numbers for lotteries. The random number generator script has a set of pre-configured modes for Gosloto 5 out of 36, 6 out of 45, 7 out of 49, 4 out of 20, Sportloto 6 out of 49. You can select a random number generation mode with free settings for other lottery options.

Lottery winning predictions

A random number generator with uniform distribution can serve as a horoscope for a lottery draw, although the probability that the forecast will come true is low. But still, using a random number generator has a good probability of winning compared to many other lottery strategies and additionally frees you from the pain of difficult selection of lucky numbers and combinations. For my part, I do not advise you to give in to the temptation and buy paid forecasts; it is better to spend this money on a textbook on combinatorics. You can learn a lot of interesting things from it, for example, the probability of winning the jackpot in Gosloto is 5 out of 36 1 To 376 992 . And the probability of getting the minimum prize by guessing 2 numbers is 1 To 8 . The forecast based on our RNG has the same probabilities of winning.

There are requests on the Internet for random numbers for the lottery, taking into account past draws. But provided that the lottery uses RNG with a uniform distribution and the probability of getting one or another combination does not depend on each draw, then it is pointless to try to take into account the results of past draws. And this is quite logical, since it is not profitable for lottery companies to allow participants to use simple methods to increase the likelihood of winning.

There is often talk that lottery organizers are rigging the results. But in fact, this makes no sense, even, on the contrary, if lottery companies influenced the results of the lottery, then it would be possible to find a winning strategy, but so far no one has succeeded. Therefore, it is very profitable for lottery organizers that the balls fall out with uniform probability. By the way, the estimated return on lottery 5 out of 36 is 34.7%. Thus, the lottery company retains 65.3% of the proceeds from ticket sales, part of the funds (usually half) is allocated to the formation of the jackpot, the rest of the money goes to organizational expenses, advertising and the company’s net profit. Circulation statistics perfectly confirm these figures.

Hence the conclusion - do not buy meaningless forecasts, use a free random number generator, take care of your nerves. Let our random numbers become your lucky numbers. Have a good mood and have a great day!

An online number generator is a convenient tool that allows you to get the required number of numbers of a given bit depth and the widest range. Our random number generator has many uses! For example, you can hold a competition on VKontakte and play there for a teddy bear in a group of bikers for a riposte :)) We will also be very flattered if, with the help of it, you decide to determine the winning number in any lottery or decide what number to bet on in a casino . We really hope that someone will find their lucky number online with us!

Random number range:

Quantity:

Eliminate repetition?

Generate numbers

Please help us develop: Tell your friends about the generator!

Random | random number online in 1 click

Numbers surround us from birth and play an important role in life. For many people, their work itself is connected with numbers; some rely on luck, filling out lottery tickets with numbers, while others attach even mystical meaning to them. One way or another, sometimes we cannot do without using a program such as random number generator.

For example, you need to organize a prize draw among your group’s subscribers. Our online random number generator will help you quickly and honestly select winners. You just need, for example, to set the required number of random numbers (based on the number of winners) and the maximum range (based on the number of participants, if numbers are assigned to them). Fraud in this case is completely excluded.

This program can also serve as a random number generator for lotto. For example, you bought a ticket and want to rely entirely on chance and luck in choosing the numbers. Then our number randomizer will help you fill out your lottery ticket.

How to generate a random number: instructions

Random number program It works very simply. You don't even need to download it to your computer - everything is done in the browser window where this page is open. Random numbers are generated in accordance with the specified number of numbers and their range - from 0 to 999999999. To generate a number online, you must:

1. Select the range in which you want the result. Perhaps you want to cut off numbers up to 10 or, say, 10,000;
2. Eliminate repetitions - by selecting this item, you will force number randomizer offer you only unique combinations within a certain range;
3. Select the number of numbers – from 1 to 99999;
4. Click the “Generate numbers” button.

No matter how many numbers you want to get as a result, the prime number generator will produce the entire result at once and you can see it on this page by scrolling through the field with numbers using the mouse or touchpad.

Now you can use the ready-made numbers the way you need. From the number field, you can copy the result to publish in a group or send by mail. And so that the result does not raise any doubts, take a screenshot of this page, on which the parameters of the number randomizer and the results of the program will be clearly visible. It is impossible to change the numbers in the field, so the possibility of manipulation is excluded. We hope our website and random number generator helped you.