Question about Casio FX-115W Plus Calculator

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What does the xbar look like on the calculator

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Hello,
Usually it is represented by a small letter x with a short straight bar on top of it. Sometimes it is an x with a small caret (hat, accent circonflexe) on top of it. I do not have the layout of your calculator, but if you see on the body of the calculator a small n (the number of entries), a greek capital sigma σ or a small sigma σ with x (xσn or xσn-1) standard deviations, the xbar is not far away.
Hope it helps.

Posted on Nov 17, 2009

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Find mean ti30xa


Clear the statistics registers with 2nd [CSR]. Add the data points with Sigma+. Errors can be corrected with 2nd [Sigma-]. Calculate the mean with 2nd [xbar].

See the example on page 11 of this guidebook.

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I have 50 data points for which i need to find standard deviation on a classpad 330 , is there any quicker way to calculate than minusing the mean from every data point?


Here is one technique I used on the TI84Plus.
Create two lists list1(50) and list2(50) of equal dimension (same length)
You will have to find how to do it on ClassPad.
Fill list2 with zeros
Fill list1 with your data.
Sort the list in ascending order (if it is not sorted)
Do standard deviation calculation on list1 (or calculate the average)
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Perform standard deviation on the new list2. You will get the mean deviation from the mean in the variable xbar.

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May 05, 2012 | Casio ClassPad 300 Calculator

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When I type in stat, then edit, t fnd the mean and the median, which is which? Because there are about 9 different answers???


The mean of a distribution is represented as an x with a bar above it. (xbar). When you scroll along the statistics you will see the Median, Xmax, Xmin, Q1, Q3, n. All clearly identified. Maybe you should learn mor about the theory.

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How do I use the standard deviation function?


  1. Calculator must be in SD mode (standard deviation mode) :Press [MODE] [.]
  2. However, if [FIX] or [SCI] appears on display you must press [MODE][9] first.
  3. Data input always starts with [SHIFT][SAC], to clear the registers of old data.
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After you finish entering the data

Press [SHIFT] [9] (sigma n-1) to get sample standard deviation
Press [SHIFT][8] (sigma n] for the population standard deviation
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Press [SHIFT] [5] (capital sigma x) for the sum of values
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For additional information you might consider taking a look at the calculator manual.

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How to use that standard deviation on the Casio fx-260solar calculator


  1. Calculator must be in SD mode (standard deviation mode) :Press [MODE] [.]
  2. However, if [FIX] or [SCI] appears on display you must press [MODE][9] first.
  3. Data input always starts with [SHIFT][SAC], to clear the registers of old data.
  4. Type a number and press the [DATA] key, it is the [M+] key at the bottom right of keypad.
After you finish entering the data

Press [SHIFT] [9] (sigma n-1) to get sample standard deviation
Press [SHIFT][8] (sigma n] for the population standard deviation
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Press [SHIFT] [5] (capital sigma x) for the sum of values
Press [SHIFT] [4] (capital sigma x to y) for the sum of squares of the values

For additional information you might consider taking a look at the calculator manual

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How do you use the statistics function to find out the mean?


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1 Answer

How do you calculate standard deviation?


  1. Calculator must be in SD mode (standard deviation mode) :Press [MODE] [.]
  2. However, if [FIX] or [SCI] appears on display you must press [MODE][9] first.
  3. Data input always starts with [SHIFT][SAC], to clear the registers of old data.
  4. Type a number and press the [DATA] key, it is the [M+] key at the bottom right of keypad.
After you finish entering the data

Press [SHIFT] [9] (sigma n-1) to get sample standard deviation
Press [SHIFT][8] (sigma n] for the population standard deviation
Press [SHIFT] [7] (xbar) for the mean
Press [SHIFT] [6] (n) for the number of data entries
Press [SHIFT] [5] (capital sigma x) for the sum of values
Press [SHIFT] [4] (capital sigma x to y) for the sum of squares of the values

For additional information you might consider taking a look at the calculator manual.

Jan 26, 2010 | Casio FX-260 Calculator

1 Answer

How to find standard deveation


  1. Calculator must be in SD mode (standard deviation mode) :Press [MODE] [.]
  2. However, if [FIX] or [SCI] appears on display you must press [MODE][9] first.
  3. Data input always starts with [SHIFT][SAC], to clear the registers of old data.
  4. Type a number and press the [DATA] key, it is the [M+] key at the bottom right of keypad.
After you finish entering the data

Press [SHIFT] [9] (sigma n-1) to get sample standard deviation
Press [SHIFT][8] (sigma n] for the population standard deviation
Press [SHIFT] [7] (xbar) for the mean
Press [SHIFT] [6] (n) for the number of data entries
Press [SHIFT] [5] (capital sigma x) for the sum of values
Press [SHIFT] [4] (capital sigma x to y) for the sum of squares of the values

For additional information you might consider taking a look at the calculator manual.

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Having trouble with standard deviaation and X bar using Casio


Hello,
Here is an example from the manual.
52c6074.jpg
Hope it helps.

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1 Answer

How to compute standard deviation given a set of numbers?


  1. Calculator must be in SD mode (standard deviation mode) :Press [MODE] [.]
  2. However, if [FIX] or [SCI] appears on display you must press [MODE][9] first.
  3. Data input always starts with [SHIFT][SAC], to clear the registers of old data.
  4. Type a number and press the [DATA] key, it is the [M+] key at the bottom right of keypad.
After you finish entering the data

Press [SHIFT] [9] (sigma n-1) to get sample standard deviation
Press [SHIFT][8] (sigma n] for the population standard deviation
Press [SHIFT] [7] (xbar) for the mean
Press [SHIFT] [6] (n) for the number of data entries
Press [SHIFT] [5] (capital sigma x) for the sum of values
Press [SHIFT] [4] (capital sigma x to y) for the sum of squares of the values

For additional information you might consider taking a look at the calculator manual

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