#### What is a T Test?

A t-test is a statistical test for comparing the means of two groups. It helps determine if the observed differences between the groups are statistically significant.

#### What is the Difference Between a One-Sample T Test and a Two-Sample T Test?

**One-Sample T Test:**Used to compare the mean of a single group to a known value.**Two-Sample T Test:**Used to compare the means of two independent groups.

#### How to Do a T Test in Excel: Step-by-Step Guide

**Example Data:**

Group 1: 1, 2, 3, 4, 5Group 2: 2, 4, 6, 8, 10

#### Step 1: Enter the Data into Excel

Open Excel and enter the data into cells A1 and B1.

#### Step 2: Select the Data

Click on cell A1, drag the mouse to cell B1, or hold down Shift while clicking on both cells.

#### Step 3: Calculate the Mean

- Click on the cell where you want the mean.
- Go to the Formulas tab > Statistical Functions > AVERAGE.

#### Step 4: Calculate the Standard Deviation

- Click on the cell for the standard deviation.
- Go to the Formulas tab > Statistical Functions > STDEV.

#### Step 5: Calculate the T Statistic

- Click on the cell for the t statistic.
- Go to the Formulas tab > Statistical Functions > TTEST.

#### Step 6: Interpret the Results

The results include a p-value. If p < 0.05, the results are considered statistically significant. In this example, interpret the p-value accordingly.

#### Conclusion

You've now learned how to perform a t-test in Excel. This guide equips you with the skills to conduct a t-test and interpret the results. If you have any questions or need further clarification, feel free to leave a comment.