Question about Texas Instruments TI-83 Plus Calculator

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Posted on Dec 04, 2007

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Random number generators on computers are not really random. They need to be "seeded". If you seed the random number generator with the same seed each time you will generate the same list of numbers. A common technique in computer programming is to seed the random number generator with a value like the number of seconds that has occurred since midnight. This gives you the illusion of real random numbers.

Look up the word "Seed" in your calculator documentation and it will most likely tell you how this is accomplished on the TI calculators.

Posted on Nov 20, 2007

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Posted on Jan 02, 2017

What kind of sum would that be? If it is a sum of a certain number of values that are explicitly given (2+5.5+ 16...) just enter them one after the other separated by the operator (+).

For a sum of terms that are defined by some recursion fornula then you will need a calculator with a Computer Algebra System (TI Nspire CAS, TI 92PLUS, TI Voyage 200 PLT, Casio ClassPad, HP 40G/49 G+/50G..)

A TI 83PLUS/84PLUS may be able to handle numerical sums of terms defined recursively.

For a sum of terms that are defined by some recursion fornula then you will need a calculator with a Computer Algebra System (TI Nspire CAS, TI 92PLUS, TI Voyage 200 PLT, Casio ClassPad, HP 40G/49 G+/50G..)

A TI 83PLUS/84PLUS may be able to handle numerical sums of terms defined recursively.

Aug 30, 2011 | Office Equipment & Supplies

The random number function always generates a number between zero and one. You can convert this to a random number in any range by a suitable combination of multiplications and additions. For example, if you want a random number between zero and ten, multiply the generated random number by 10. If you want a random number between one and ten, multiply the generated random number by 9 and then add 1.

If you want to simulate the roll of a six-sided die, multiply the generated random number by 6, add 1, and ignore the fractional portion. This will give you a 1, 2, 3, 4, 5, or 6 with more-or-less equal probability.

If you want to simulate the roll of a six-sided die, multiply the generated random number by 6, add 1, and ignore the fractional portion. This will give you a 1, 2, 3, 4, 5, or 6 with more-or-less equal probability.

Mar 10, 2011 | Casio FX-300MS Calculator

Use the rand() function. If you give it a positive integer argument *n*, it will return a random integer in the range in the interval [1, *n*]. You'll find rand() in the MATH/PROBABILITY menu.

Dec 08, 2010 | Texas Instruments TI-89 Calculator

The post answer the question concerning how to generate random integers. The example given is for rolling a dice. I am inserting the modification that treats your case at the end.

The random number generator function is called Ran# and can be accessed in RUN mode by pressing:

**[OPTN] [F6] [F3] (PROB) [F4] to access the (Ran#)** function

In the paragraph above, the**bold text** in square brackets indicates keypresses,
while the text in parentheses represents the menus that appear at the
bottom of the calculator screen. This also assumes there are no menus on
the bottom of the screen when you begin. If PROB is already on the
screen, then the [F6] key is not necessary, just press [F3] then [F4] at
this point.

The Ran# function generates a random decimal number between 0 and 1. If you need to generate a number with a higher range, then there may be extra steps involved. For example, to choose a random number between 0 and 100, you would enter:

**Ran#×100 or Ran#(100)**

Let's
say you want to simulate a dice roll, where you get an integer between 1
and 6. Your first step would be to do:

**Ran#×6**

This will give you a random decimal number between 0 and 6. But we need an integer, not a decimal. To make it an integer, you would change this to:

**Int(Ran#×6)**

Press**[OPTN] [F6] [F4] (NUM) [F2] to access the (Int)**

This now gives you an integer between 0 and 5. We just need to add 1 to the result.

**Int(Ran#×6)+1**

The result should be an integer between 1 and 6.

To generate random number between 1 and 50

**Int(Ran#×50)+1**

The random number generator function is called Ran# and can be accessed in RUN mode by pressing:

In the paragraph above, the

The Ran# function generates a random decimal number between 0 and 1. If you need to generate a number with a higher range, then there may be extra steps involved. For example, to choose a random number between 0 and 100, you would enter:

This will give you a random decimal number between 0 and 6. But we need an integer, not a decimal. To make it an integer, you would change this to:

Press

This now gives you an integer between 0 and 5. We just need to add 1 to the result.

The result should be an integer between 1 and 6.

To generate random number between 1 and 50

Jul 16, 2010 | Casio FX-115ES Scientific Calculator

The random number generator function is called Ran# and can be accessed
in RUN mode by pressing:

**[OPTN] [F6] [F3] (PROB) [F4] to access the (Ran#)** function

In the paragraph above, the**bold text** in square brackets indicates key presses,
while the text in parentheses represents the menus that appear at the
bottom of the calculator screen. This also assumes there are no menus on
the bottom of the screen when you begin. If PROB is already on the
screen, then the [F6] key is not necessary, just press [F3] then [F4] at
this point.

The Ran# function generates a random decimal number between 0 and 1. If you need to generate a number with a higher range, then there may be extra steps involved. For example, to choose a random number between 0 and 100, you would enter:

**Ran#×100 or Ran#(100)**

Let's
say you want to simulate a dice roll, where you get an integer between 1
and 6. Your first step would be to do:

**Ran#×6**

This will give you a random decimal number between 0 and 6. But we need an integer, not a decimal. To make it an integer, you would change this to:

**Int(Ran#×6)**

Press**[OPTN] [F6] [F4] (NUM) [F2] to access the (Int)**

This now gives you an integer between 0 and 5. We just need to add 1 to the result.

**Int(Ran#×6)+1**

The result should be an integer between 1 and 6.

In the paragraph above, the

The Ran# function generates a random decimal number between 0 and 1. If you need to generate a number with a higher range, then there may be extra steps involved. For example, to choose a random number between 0 and 100, you would enter:

This will give you a random decimal number between 0 and 6. But we need an integer, not a decimal. To make it an integer, you would change this to:

Press

This now gives you an integer between 0 and 5. We just need to add 1 to the result.

The result should be an integer between 1 and 6.

Jul 06, 2010 | Casio CFX-9850G Plus Calculator

The following uses keystrokes and screen captures from the FX-9750GII but the essential information is the same. Use the F6 key to move to next page of TABS (those at the bottom of screen) until you find the TAB that interests you (PROB, RAND#, INT, etc.)

The random number generator function is called Ran# and can be accessed in RUN mode by pressing:

**[OPTN] [F6] [F3] (PROB) [F4] to access the (Ran#)** function

In the paragraph above, the**bold text** in square brackets indicates key presses,
while the text in parentheses represents the menus that appear at the
bottom of the calculator screen. This also assumes there are no menus on
the bottom of the screen when you begin. If PROB is already on the
screen, then the [F6] key is not necessary, just press [F3] then [F4] at
this point.

The Ran# function generates a random decimal number between 0 and 1. If you need to generate a number with a higher range, then there may be extra steps involved. For example, to choose a random number between 0 and 100, you would enter:

**Ran#×100 or Ran#(100)**

Let's
say you want to simulate a dice roll, where you get an integer between 1
and 6. Your first step would be to do:

**Ran#×6**

This will give you a random decimal number between 0 and 6. But we need an integer, not a decimal. To make it an integer, you would change this to:

**Int(Ran#×6)**

Press**[OPTN] [F6] [F4] (NUM) [F2] to access the (Int)**

This now gives you an integer between 0 and 5. We just need to add 1 to the result.

**Int(Ran#×6)+1**

The result should be an integer between 1 and 6.

The random number generator function is called Ran# and can be accessed in RUN mode by pressing:

In the paragraph above, the

The Ran# function generates a random decimal number between 0 and 1. If you need to generate a number with a higher range, then there may be extra steps involved. For example, to choose a random number between 0 and 100, you would enter:

This will give you a random decimal number between 0 and 6. But we need an integer, not a decimal. To make it an integer, you would change this to:

Press

This now gives you an integer between 0 and 5. We just need to add 1 to the result.

The result should be an integer between 1 and 6.

May 21, 2010 | Casio CFX-9850G Plus Calculator

If you open the CATALOG of commands, you will not find a DiagnosticOn command. It does not exist for the TI89 because whenever R and R2 correlation coefficients are meaningful they are calculated by default and displayed on the screen where you get the regression equation. If they are not defined bu the statistical theory no R or R2 are calculated.

In short You do not need a DiagnosticOn command to have R and R2 calculated. If the regression model uses them, they will be calculated by default.

By the way, DiagnosticOn is a command for the TI83/83Plus/84Plus but not for the TI89/89Titanium/92/92PLUS/Voyage 200PLT.

In short You do not need a DiagnosticOn command to have R and R2 calculated. If the regression model uses them, they will be calculated by default.

By the way, DiagnosticOn is a command for the TI83/83Plus/84Plus but not for the TI89/89Titanium/92/92PLUS/Voyage 200PLT.

Apr 06, 2010 | Texas Instruments TI-89 Calculator

The random number generator function is called Ran# and can be accessed
in RUN mode by pressing:

**[OPTN] [F6] [F3] (PROB) [F4] to access the (Ran#)** function

In the paragraph above, the**bold text** in square brackets indicates keypresses,
while the text in parentheses represents the menus that appear at the
bottom of the calculator screen. This also assumes there are no menus on
the bottom of the screen when you begin. If PROB is already on the
screen, then the [F6] key is not necessary, just press [F3] then [F4] at
this point.

The Ran# function generates a random decimal number between 0 and 1. If you need to generate a number with a higher range, then there may be extra steps involved. For example, to choose a random number between 0 and 100, you would enter:

**Ran#×100 or Ran#(100)**

Let's
say you want to simulate a dice roll, where you get an integer between 1
and 6. Your first step would be to do:

**Ran#×6**

This will give you a random decimal number between 0 and 6. But we need an integer, not a decimal. To make it an integer, you would change this to:

**Int(Ran#×6)**

Press**[OPTN] [F6] [F4] (NUM) [F2] to access the (Int)**

This now gives you an integer between 0 and 5. We just need to add 1 to the result.

**Int(Ran#×6)+1**

The result should be an integer between 1 and 6.

In the paragraph above, the

The Ran# function generates a random decimal number between 0 and 1. If you need to generate a number with a higher range, then there may be extra steps involved. For example, to choose a random number between 0 and 100, you would enter:

This will give you a random decimal number between 0 and 6. But we need an integer, not a decimal. To make it an integer, you would change this to:

Press

This now gives you an integer between 0 and 5. We just need to add 1 to the result.

The result should be an integer between 1 and 6.

Mar 03, 2010 | Casio FX-9860G Graphic Calculator

Hello,

To access the Random number generator, press [MENU], Use arrows to select [RUN] and press [EXE].

In [RUN] press [OPTN][F6:->] to pan to the right then press [F3:PROB] then [F4:RAND#]. The command echoes on the screen.

Hope it helps.

To access the Random number generator, press [MENU], Use arrows to select [RUN] and press [EXE].

In [RUN] press [OPTN][F6:->] to pan to the right then press [F3:PROB] then [F4:RAND#]. The command echoes on the screen.

- Now if you press [EXE] a number between 0 and 1 is generated.
- Each time you press [EXE] a new number is generated.

Hope it helps.

Nov 07, 2009 | Casio FX-9750GPlus Calculator

A random number generator exists on this calculator. It is accessible in RUN or PGRM modes by pressing the OPTN key. If you don not see a tab PROB at the bottom of screen, press the rightmost key to move to next page.

Anyway, RAND# generates a real number between 0 and 1.

For other numbers read on.

The Ran# function generates a random decimal number between 0 and 1. If you need to generate a number with a higher range, then there may be extra steps involved. For example, to choose a random number between 0 and 100, you would enter:

**Ran#×100 or Ran#(100)**

Let's
say you want to simulate a dice roll, where you get an integer between 1
and 6. Your first step would be to do:

**Ran#×6**

This will give you a random decimal number between 0 and 6. But we need an integer, not a decimal. To make it an integer, you would change this to:

**Int(Ran#×6)**

**[OPTN].......(NUM) [F2] to access the (Int)**

This now gives you an integer between 0 and 5. We just need to add 1 to the result.

**Int(Ran#×6)+1**

The result should be an integer between 1 and 6.

Anyway, RAND# generates a real number between 0 and 1.

For other numbers read on.

The Ran# function generates a random decimal number between 0 and 1. If you need to generate a number with a higher range, then there may be extra steps involved. For example, to choose a random number between 0 and 100, you would enter:

This will give you a random decimal number between 0 and 6. But we need an integer, not a decimal. To make it an integer, you would change this to:

This now gives you an integer between 0 and 5. We just need to add 1 to the result.

The result should be an integer between 1 and 6.

Nov 07, 2009 | Casio FX-7400G Plus Calculator

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