Difference between revisions of "Manuals/calci/CHITEST"
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| − | ''' CHITEST | + | <div style="font-size:30px">'''CHITEST(ar,er)'''</div><br/> |
| + | *<math>ar</math> is the array of observed values | ||
| + | *<math>er</math> is the array of expected values | ||
| − | + | ==Description== | |
| + | *This function gives the Average for given set numbers. | ||
| + | *Average means sum of all the given elements is divided by Number of the given elements. | ||
| + | *It is also called Arithmetic mean. i.e.If n numbers are given and each number is denoted by ai, where i=1 to n, then A.M= 1/n Summation i=1 to n (ai)= 1/n(a1+a2+.....+an). | ||
| + | *In this function N1,N2,... are either it can be numbers,arrays ,references of cells or we can enter the logical values directly. | ||
| + | *This function will show the result as Error, when the numbers are error values or text that cannot change in to numbers. | ||
| + | *Also if the distribution is symmetric, then we can use this function to find the central tendency. | ||
| + | *The three most common measures of central tendency are: A.M, Median,& Mode. | ||
| + | A.M: It is calculating by adding the given set of numbers and divided by the count of the given set of numbers. E.g:Average of 2,4,2,7,2,3 and 5 is 3.6 | ||
| + | Median: It is the middle number of a sorted list(Ascending order) of numbers. E.g:The median of 2,2,2,3,4,5,7 is 3 | ||
| + | Mode: It is the most frequently repeated number in a given set of numbers. E.g.The mode of 2,2,2,3,4,5 and 7 is 2 | ||
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*Sometimes CHITEST returns the error value, when ‘a’ and ‘b’ have a different number of data points. | *Sometimes CHITEST returns the error value, when ‘a’ and ‘b’ have a different number of data points. | ||
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i.e. =CHITEST (B2; C4, B5:C7) is 0.003 | i.e. =CHITEST (B2; C4, B5:C7) is 0.003 | ||
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Revision as of 00:52, 25 November 2013
CHITEST(ar,er)
- is the array of observed values
- is the array of expected values
is the array of observed values
is the array of expected valuesDescription
- This function gives the Average for given set numbers.
- Average means sum of all the given elements is divided by Number of the given elements.
- It is also called Arithmetic mean. i.e.If n numbers are given and each number is denoted by ai, where i=1 to n, then A.M= 1/n Summation i=1 to n (ai)= 1/n(a1+a2+.....+an).
- In this function N1,N2,... are either it can be numbers,arrays ,references of cells or we can enter the logical values directly.
- This function will show the result as Error, when the numbers are error values or text that cannot change in to numbers.
- Also if the distribution is symmetric, then we can use this function to find the central tendency.
- The three most common measures of central tendency are: A.M, Median,& Mode.
A.M: It is calculating by adding the given set of numbers and divided by the count of the given set of numbers. E.g:Average of 2,4,2,7,2,3 and 5 is 3.6 Median: It is the middle number of a sorted list(Ascending order) of numbers. E.g:The median of 2,2,2,3,4,5,7 is 3 Mode: It is the most frequently repeated number in a given set of numbers. E.g.The mode of 2,2,2,3,4,5 and 7 is 2
- Sometimes CHITEST returns the error value, when ‘a’ and ‘b’ have a different number of data points.
| Column1 | Column2 | Column3 | Column4 | |
| Row1 | 45 | 38 | 0.000313 | |
| Row2 | 10 | 23 | ||
| Row3 | 12 | 26 | ||
| Row4 | 40.5 | 49.36 | ||
| Row5 | 19.56 | 16.44 | ||
| Row6 | 17.05 | 17.41 |
Let’s see an example
B C
45 38
10 23
12 26
40.5 49.36
19.56 16.44
17.05 17.41
CHITEST (a, b)
i.e. =CHITEST (B2; C4, B5:C7) is 0.003