I use the T.DIST.2T function in Google Sheets to calculate the probability that a value is two standard deviations away from the mean. I enter the value I want to test, the mean, and the standard deviation into the function, and it tells me the probability that the value is two standard deviations away from the mean. This can be helpful for determining whether or not a value is significantly different from the mean.
The syntax of T.DIST.2T in Google Sheets is as follows: =T.DIST.2T(x,y) where x is the first value and y is the second value. This function calculates the two-tailed distribution of a t-distribution with the given degrees of freedom.
The T.DIST.2T function in Google Sheets is used to calculate the two-tailed probability of a Student's t-distribution. The function takes two input arguments: the first is the value of the t-distribution, and the second is the degrees of freedom. The function then calculates the probability of the t-distribution being greater than or less than the input value.
There are a few occasions when you should not use T.DIST.2T in Google Sheets. One instance is when you have a table of data with fewer than 30 rows. In this case, you should use the T.DIST function instead. Another time you should not use T.DIST.2T is when you want to find the probability of a value that is less than or equal to zero. In this case, you should use the T.DIST.RT function.
There are a few similar formulae to T.DIST.2T in Google Sheets. One is T.DIST, which calculates the probability of a t distribution. There is also the NORM.DIST function, which calculates the normal distribution. Other similar functions include the F.DIST and the X.DIST functions.