Question about Casio CFX 9850GA Plus Calculator

# Casio 9850 How do you solve a statistics problem for finding the mean, median and mode of this list of numbers: 2, 12, 10, 11, 7, 6, 5, 9, 11, 7, 13

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Definitely not by asking in a forum. You could get a walkthrough, but that's not solving the problem.
This one is down to reading the calculator manual and your textbook a bit, then satisfying yourself that your answer and the definitions for those types of average are in accord. Mode is clearly an oddball which would make more sense with more context, but for now just pick the most common number, which is a set: (7, 10, 11).
That sounded better than 'toss-up between 7, 10 and 11,' did it not?

Posted on Jun 23, 2008

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## Related Questions:

### What is medium of 2,4,6,6,7,8,10,11,13

https://www.easycalculation.com/statistics/mean-median-mode.php

The mean (average) is the sum divided by the number of items regardless of individual values. Here is is 7.4444, rounded off.

The median is the middle number in the group, listing in ascending order. You have 9 items. The fifth one as four above it and four below it. It is a 7. (A selected group of numbers is referred to as a data set. If taken from a larger group, the selection is referred to as a subset.)

The mode is the most frequently listed number. Only the 6 repeats itself in this example. That makes it the most frequently repeated number.

Understanding How to Calculate the Mean Median and Mode

Sep 17, 2017 | Computers & Internet

### Hi,how can I calculate median using fx-570es plus?

The median is the number is the middle.

Using the calculator, you can follow the Statistical Calculations (Stat) on pages 22 and 23 of the attached manual. http://support.casio.com/pdf/004/fx-570_991ES_PLUS_E.pdf

However, it might be quicker to just put the numbers is order from lowest to highest and pick out the number in the middle.

For example, take the numbers 3, 5, 4, 7, 6, 4, 9.

Putting them in order, we get 3, 4, 4, 5, 6, 7, 9

There are 7 numbers so we want the 4th number (3 numbers to the right and 3 numbers to the left). In this case, the 4th number is 5 and that is our median, as half the numbers are lower than it and half the numbers are higher than it. It the number of numbers is even, you take the average of the two middle numbers.

Good luck,

Paul

May 16, 2016 | Casio Fx-570es Scientific Calculator

### Math mean median mode

The question is incomplete.
The mean, also called the average is defined as
mean= (sum of the data values)/(number of data elements)
Mode = the most frequent data value (the one that is most repeated)
To find the median:
1. Order the data values in ascending order (sort them from the smallestr to the largest), and
2. Locate the data value that is in the middle.
3. If the number of data values id ODD (not a multiple of 2) there is only one middle element. That is the median.
4. If the number of data elements is EVEN (multiple of 2), there is not one middle element but two.
5. The median is the average of the two middle element values

1. Median =( left of middle value +right of middle value)/2
2. Imagine this median value to be inserted between the two middle elements
Example 1
Data values 12.5, 13, 13., 13, 13.5, 14, 19.5, 19.5, 20
Mean =(12.5+13+13+13+13.5 +14+19.5+19.5+20)/9=?
Mode= most frequent value. Here it is 13 (repeated 3 times)
There are 9 values, an odd number. Middle element is the 5th ( 13.5)
Median=13.5

Example 2
Data values 12.5, 13, 13., 13, 13.5, 14, 19.5, 19.5, 20, 25
Mean =(12.5+13+13+13+13.5 +14+19.5+19.5+20 + 25)/10=?
Mode= most frequent value. Here it is 13 (repeated 3 times)
There are 10 values, an even number. Middle element is not among the values. There are two middle elements (the 5th and the 6th) or
The value of the median is the average of the 5th and 6th elements or
Value of Median =(13.5+14)/2=?

Nov 21, 2013 | Computers & Internet

### How do i sort out random numbers?

Here is a sequence of screen captures that illustrates how you do 1-var statistics. I believe it is clear enough.
To sort tap EDIT and select Sort (ascending)
To perform 1-var stats Tap CALC and select one-variable.
Specify the list where the data is (list1), if you have repeated entries you should create a frequency list ( in L2). If no frequency list, frequency is set to 1.
Once you get the stats you can scroll down to read Q1,Q2, Median, etc.

Apr 13, 2012 | Casio ClassPad 300 Calculator

### Can you please help me on how to calculate mean, median, mode, standard deviation calculation on casio fx-991ms scientific calculator

This will show you how to do statistics (calculate average, standard deviation, regressions etc.) as to the mode and median refer to the definitions.

TO COMPUTE STANDARD DEVIATION AND 2-VAR STATISTICS.

I assume you know the theory. I will show you the key strokes

For 1-Var statistics
Press [MODE][3:STAT] [1:1-VAR]. You are ready to enter values in the X column.
Enter a number and press [=]. Cursor jumps to second number to enter.
Keep entering numbers and pressing [=] till all numbers are in. Press the [=] key after the last one.
Press [AC] key to clear the screen.
Press [SHIFT] [STAT] (above digit 1.) then [5:Var]. Screen displays the statistical variables 1:n ;2: x bar; 3: x sigma n; 4:x sigma n-1.
Press the number corresponding to the statistical value you want, ex 1:n . The variable appears on screen. Press [=] and it will be displayed.
To display another variable press [SHIFT][STAT][5:Var][ 1,2, 3, or 4] .

To access the sum of squares sigma x^2 and the sum of data sigma x press[SHIFT][STAT][4:SUM] then [1: for sigma x^2] or [2: for sigma x]. Press [SHIFT][STAT][6:MinMax] to access minX and maxX.

For 2-var statistics
To perform 2 variable statistics you press [MODE][3:STAT] and any of the other regression options (except 1:1-Var). A two column template opens where you enter the X and Y values. When finished entering data, press [SHIFT][STAT][5:Var]. to access the different statistics. As I assumed above, you should be able to recognize what each variable means.

Apr 19, 2011 | Casio FX-115ES Scientific Calculator

### How to solye statistics problem

I have no clear idea what you mean by solve statistics problem. But if your problems involve finding the standard deviation and other statistical values then this post will help you.

The variance is the square of the standard variation

TO COMPUTE STANDARD DEVIATION AND 2-VAR STATISTICS.

I assume you know the theory. I will show you the key strokes

for 1-Var statistics
Press [MODE][3:STAT] [1:1-VAR]. You are ready to enter values in the X column.
Enter a number and press [=]. Cursor jumps to second number to enter.
Keep entering numbers and pressing [=] till all numbers are in. Press the [=] key after the last one.
Press [AC] key to clear the screen.
Press [SHIFT] [STAT] (above digit 1.) then [5:Var]. Screen displays the statistical variables 1:n ;2: x bar; 3: x sigma n; 4:x sigma n-1.
Press the number corresponding to the statistical value you want, ex 1:n . The variable appears on screen. Press [=] and it will be displayed.
To display another variable press [SHIFT][STAT][5:Var][ 1,2, 3, or 4] .

To access the sum of squares sigma x^2 and the sum of data sigma x press[SHIFT][STAT][4:SUM] then [1: for sigma x^2] or [2: for sigma x]. Press [SHIFT][STAT][6:MinMax] to access minX and maxX.

For 2-var statistics
To perform 2 variable statistics you press [MODE][3:STAT] and any of the other regression options (except 1:1-Var). A two column template opens where you enter the X and Y values. When finished entering data, press [SHIFT][STAT][5:Var]. to access the different statistics. As I assumed above, you should be able to recognize what each variable means.

Dec 22, 2010 | Casio FX-115ES Scientific Calculator

### How can i use casio 991ms to solve all statistics questions

first off you want you calculator in SD (standard deviation) mode to do this hit mode twice and then 1.
next it is good practice to start off by clearing the memory to do this hit shift, CLR,1 and then = this will clear statistical memory
to enter values into your data set , you enter the value, then press the DT (M+) button. (note: pressing DT repeatedly will impute the same value multiple times)
once you have finished pluging in your numbers your calculator can give you statistical information about the data set.
hitting shift then 1(S-SUM) gives you three options: 1 the sum of the squares of each value 2 the sum of each value 3 the number of terms in the data set hitting shift then 2 (S-VAR) gives you three more options 1 x bar (the mean) 2 x sigma n (the population standard deviation) 3 x sigma n-1 (the sample standard deviation)
you can use these tools to solve alot of statistical problems i hope this helped
Source: http://support.casio.com/pdf/004/fx115MS_991MS_E.pdf page 28 of he pdf

Dec 01, 2010 | Casio FX-300MSTP Scientific Calculator

### How do i use this calculator (casio CFX 9850)to find the variance

Part A shows you how to enter your data and calculate some statistical values. Keep in mind that the variance is the square of the standard deviation.

You can safely ignore the PART about REGRESSIONs until that time you need the information.

PART A
In the main menu select [STAT] icon to enter Stat mode and display the statistical data lists. Use the satistical data lists to input data and perform statistical calculations. Use the arrows to move the highlighting around the lists.
Exemple: Enter the following values in List 1
1st line enter 90 [EXE]
2nd line 85 [EXE]
3 79 [EXE]
4 75 [EXE]
5 70 [EXE]
6 68 [EXE]
7 56 [EXE]

When finished you press [F2:Calc], then [F1:1Var] and the statistical results appear on screen.
Title of screen : 1-Variable
x bar =74.7142857
Capital Sigma x= 523
Capita Sigma X squared = 39851
x lower case sigma n = 10.5249945
x lower case sigma n-1= 11.3682934
n = 7
Scroll down with Down arrow to access other data
minX =56
Q1=68
Med =75
Q3=85
Xbar -x lower case sigma n =64.1892911
x bar + x lower case sigma n = 85.2392802
maxX=90
Mod=90

All you have to do now, is to look at the theory you learned and interpret what these values mean.

PART B
2. press [F1:Graph],
3. select Gph1, Gph2, or Gph3.
4. Once the graph of the experimental data is drawn, you will have access to the diverse regression models.
• [X:Linear]
• [Med-Med],
• [Cubic;X^3]
• [Quartic: X^2].
• Press [F6] to scroll right to access the others:
• [Logarithmic:LOG],
• [Exponential :EXP],
• [Power :Pwr] and
• [Sinusoidal:Sin]
1. After you select a model and press [EXE], the screen displays the equation and its various coefficients.
2. On that same screen, you have a menu option [F6:Draw].
3. If you select it, the regression curve will be drawn on the same screen as your statistical graph.
4. This allows you to judge if the fit is good. If it is not, you have the option to choose another model.
5. The other option [F5:Copy] allows you to save the regression equation in the Y1, Y2, etc. variables.

Jun 02, 2010 | Casio CFX-9850G Plus Calculator

### Difficulty changing to the Statistics mode

Download the small instruction book from TI web site, keystrokes and examples at pages 10/11

Mar 22, 2008 | Texas Instruments TI-30XA Calculator

### Median for statistics

The TI-30XA doesn't give the median of a sequence of entered values, just the mean, std dev, and other one variable stats

Jan 27, 2008 | Texas Instruments TI-30XA Calculator

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