Difference between revisions of "Manuals/calci/TINV"
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<div style="font-size:30px">'''TINV(prob,df) '''</div><br/> | <div style="font-size:30px">'''TINV(prob,df) '''</div><br/> | ||
| − | *<math>prob </math> is the probability value for the two tailed | + | *<math>prob </math> is the probability value for the two tailed T-distribution. |
*<math> df </math> is the degrees of freedom. | *<math> df </math> is the degrees of freedom. | ||
| − | |||
==Description== | ==Description== | ||
| − | *This function gives the t value of the | + | *This function gives the <math>t</math> value of the T-distribution. |
| − | *This function is called the inverse function of the | + | *This function is called the inverse function of the T-distribution. |
| − | *In <math> TINV(prob,df), prob </math> is the probability value related with the two tailed distribution and <math> df </math> is the number of degrees of freedom which is | + | *In <math> TINV(prob,df)</math>, <math>prob </math> is the probability value related with the two tailed distribution and <math> df </math> is the number of degrees of freedom which is characterize the distribution. |
*i.e., This function is the inverse value of <math> TDIST(x,df,2)</math>. | *i.e., This function is the inverse value of <math> TDIST(x,df,2)</math>. | ||
| − | *Suppose we want to find the inverse value | + | *Suppose we want to find the inverse value of one tailed distribution, then we have to multiply 2 with the prob value. |
| − | *For e.g., TINV(0.078,20)=1.857683 which is the inverse value of two tailed | + | *For e.g., TINV(0.078,20) = 1.857683 which is the inverse value of two tailed T-distribution. |
| − | *TINV(2*0.078,20)=1.474181542 which is the inverse value of one tailed | + | *TINV(2*0.078,20)=1.474181542 which is the inverse value of one tailed T-distribution. |
| − | *Suppose df value is decimal then it is converted in to integers. | + | *Suppose <math>df<math> value is decimal then it is converted in to integers. |
| − | *If <math>TDIST(x,df,t)=prob </math>, then <math> TINV(prob,df)=x</math> for the two tailed | + | *If <math>TDIST(x,df,t)=prob </math>, then <math> TINV(prob,df)=x</math> for the two tailed T-distribution. |
*<math> TINV </math> using the iterating method to find the value of <math> x </math>. | *<math> TINV </math> using the iterating method to find the value of <math> x </math>. | ||
*Suppose the iteration has not converged after 100 searches, then the function gives the error result. | *Suppose the iteration has not converged after 100 searches, then the function gives the error result. | ||
*This function will give the result as error when | *This function will give the result as error when | ||
| − | 1.Any one of the argument is | + | 1.Any one of the argument is non-numeric. |
2.prob<0 or prob>1 or df<1. | 2.prob<0 or prob>1 or df<1. | ||
| − | |||
==Examples== | ==Examples== | ||
| − | #TINV(0.0742,55)=1.820015422 | + | #=TINV(0.0742,55) = 1.820015422 |
| − | #TINV(2*0.0371,55)=1.820015422 | + | #=TINV(2*0.0371,55) = 1.820015422 |
| − | #TINV(0.65482,29) = 0.451735616 | + | #=TINV(0.65482,29) = 0.451735616 |
| − | #TINV(0.5,5)=0.726686844 | + | #=TINV(0.5,5) = 0.726686844 |
| − | |||
==See Also== | ==See Also== | ||
*[[Manuals/calci/TTEST | TTEST]] | *[[Manuals/calci/TTEST | TTEST]] | ||
*[[Manuals/calci/TDIST | TDIST ]] | *[[Manuals/calci/TDIST | TDIST ]] | ||
| − | |||
==References== | ==References== | ||
Revision as of 07:08, 30 January 2014
TINV(prob,df)
- is the probability value for the two tailed T-distribution.
- is the degrees of freedom.
is the probability value for the two tailed T-distribution.
is the degrees of freedom.Description
- This function gives the value of the T-distribution.
- This function is called the inverse function of the T-distribution.
- In , is the probability value related with the two tailed distribution and is the number of degrees of freedom which is characterize the distribution.
- i.e., This function is the inverse value of .
- Suppose we want to find the inverse value of one tailed distribution, then we have to multiply 2 with the prob value.
- For e.g., TINV(0.078,20) = 1.857683 which is the inverse value of two tailed T-distribution.
- TINV(2*0.078,20)=1.474181542 which is the inverse value of one tailed T-distribution.
- Suppose , then for the two tailed T-distribution.
- using the iterating method to find the value of .
- Suppose the iteration has not converged after 100 searches, then the function gives the error result.
- This function will give the result as error when
value of the T-distribution.
, 
.
, then 
for the two tailed T-distribution.
using the iterating method to find the value of 
. 1.Any one of the argument is non-numeric.
2.prob<0 or prob>1 or df<1.
Examples
- =TINV(0.0742,55) = 1.820015422
- =TINV(2*0.0371,55) = 1.820015422
- =TINV(0.65482,29) = 0.451735616
- =TINV(0.5,5) = 0.726686844