 Covers all ttests :1sample ttests, 2sample ttest, paired ttest and looking up area under the student tdistribution
 No learning curve: just copy and paste your data into excel—no complicated installations or complex syntax to use
 Sample data already shows you what results look like
 No hidden computations see the cell formulas to better understand how the statistical tests are computed
 Customize the formulas or integrate the calculators with other Excel files and using Excel's builtin graphing and other statistical functions
 Easily share results using excel or link the calculators to other workbooks.
Who Should Buy
 Professionals who want an easy way to conduct ttests without the hassle of installations and learning complicated statistical packagesIf you can use Excel you can use the Easy t Excel Ttest Calculator Package !
 Students trying to learn statistics by seeing the calculations and detailed output for the ttests calculators.
Select Sample Screen ShotsArea under tdistribution
Use the tconversion calculators if you need to find the critical value for a percent or to see if a tstatistic is statistically significant. Simply enter the sample size and degrees of freedom to get the area or inverse area under the tdistribution.  tConfidence Interval
Confidence intervals show both the precision and location of a sample estimate. Enter either summary or raw data and specify the confidence level. A graph automatically updates to show a visualization of the confidence interval.  1Sample ttest
If you need to compare a mean against a criterion (e.g. can people withdraw money from an ATM in less than 30 seconds) use the 1sample ttest for raw and summary data.  Paired ttest
When data are matched or in pairs (usually the same subject responds to two different conditions), the paired ttest provides more power than the between subjects ttest  2Sample ttest
Enter either summary data or raw data (not shown) to quickly look for significant differences. The calculator provides pvalues for equal or unequal variances, confidence interval around the difference and a graph that updates automatically.  Home Page
The HomePage provides an easy starting point for the ttest calculators. 
 Statistical Tests
 1sample ttest (Summary & Raw Data)
 2sample ttest (Summary & Raw Data)
 Pairedt test
 Confidence Intervals for a Difference Between 2 Means (Summary & Raw Data)
 tvalue to Percent
 Percent to tvalue
