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(a+3)x +5 what is a value

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Hi,
You can use the following website to solve all alegbra problems
http://www.myalgebra.com/

In mathematics, an absolute value is a function which measures the "size" of elements in a field or integral domain. More precisely, if D is an integral domain, then an absolute value is any mapping | ⋅ | from D to the real numbers R satisfying:

  • | x | ≥ 0,
  • | x | = 0 if and only if x = 0,
  • | xy | = | x || y |,
  • | x + y | ≤ | x | + | y |.
Note that some authors use the term valuation or norm instead of "absolute value".


Proton

Posted on Feb 14, 2009

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What is he median and how do I use the median


This is the value in a sample with as many other values to one side of it as to the other. In other words it is the middle value having no regard to magnitude.

It is a measure of central tendency, and is used mainly in comparison with the mean value, to estimate skewness, although it is not always reliable in this regard.

http://en.wikipedia.org/wiki/Skewness#Relationship_of_mean_and_median

Sep 26, 2014 | Educational & Reference Software

1 Answer

Mean median mode definitions


Mean: the arithmetic average = total of values/ number of values

Median: that value with as many to one side as on the other (might be the mean of the 2 middle values)

Mode: the most often occurring value (might be more than one mode)

Aug 22, 2014 | Educational & Reference Software

1 Answer

What does <u<: mean


a<b<c
The sign < means less than
Read from left to right the expression a<b<c means the value of a is less than that of b, and the value of b is less than that of c. In full is means that the value of b falls between the values of a and c.

Jul 07, 2014 | Educational & Reference Software

1 Answer

I dont know what range is


At least two meanings.
In statistics ( say 1-var), let Xmin be the smallest value in the data set, and Xmax the largest value in the set.
Range= Xmax-Xmin

In functions and graphes
Let y=f(x) be a function, x is the independent variable and y the dependent variable.
The domain of the function is the set of all possible values that the independent variable can have: it is the pool where x takes it values, and the function f(x) its inputs.
The range of the function f(x) is the set of all possible values of the dependent variable, the set of all possible outputs of the function f(x)

Mar 12, 2014 | Educational & Reference Software

1 Answer

Range (math term)


At least two meanings.
In statistics ( say 1-var), let Xmin be the smallest value in the data set, and Xmax the largest value in the set. Range= Xmax-Xmin

In functions and graphs
Let y=f(x) be a function, x is the independent variable and y the dependent variable.
The domain of the function is the set of all possible values that the independent variable can have: it is the pool where x takes it values, and the function f(x) its inputs.
The range of the function f(x) is the set of all possible values of the dependent variable, the set of all possible outputs of the function f(x)

Mar 12, 2014 | Educational & Reference Software

1 Answer

Whats a median


The median of a finite list of numbers can be found by arranging all the observations from lowest value to highest value and picking the middle one (e.g., the median of {3, 5, 9} is 5). If there is an even number of observations, then there is no single middle value; the median is then usually defined to be the mean of the two middle values. It is similar to an average. or a root mean square value (RMS).

Nov 30, 2013 | Educational & Reference Software

1 Answer

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 | Educational & Reference Software

1 Answer

Why is it true that at x-intercept, the value of y is0, and at y-intercept the value of x is 0?


The x intercept is where the value of y when graphed lands directly on the x axis. The value of y anywhere on the x axis is zero. The same is true for the y intercept producing an x value of zero. The point at which the graphed line intersects the y axis gives an x value of zero. The value of x anywhere on the y axis is zero.

Jan 19, 2010 | Mathsoft StudyWorks! Mathematics Deluxe...

1 Answer

What is the value of 3 in 53


in any decimal number each of the digits has two values
  • face value
  • place value
in 53 the face value as well as place value for 3 are 3

Thanks
Zulfikar ali
ali_zulfikar@yahoo.com
9899780221

Jan 30, 2009 | SoftMath Algebrator - Algebra Homework...

1 Answer

Need to no how to find Type 1 error for statistics on TI 83 plus


Carry out the test. The calculator will display a p= value (or if you draw it - it will be the shaded area). This is the type one error. Why? Well if H0 is true then your t-test will come from this distribution. Think of the bell shape as a histogram - you have one value you are comparing to it. Is this value typical of this "histogram"? If the value is near the centre of the bell it is reasonable that it came from it. If it is in the extreme it probably didn't and so we reject H0. The type one error is the probability that we reject H0 given that it is true. H0 assumes the t value comes from this distribution - so it is the probability of getting this value or something more extreme. (i.e. the shaded area. Incidently this is the same way of finding the type one error for any test.

Jan 08, 2009 | Texas Instruments TI-83+ Graphing...

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