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# How to Do t Test in Excel

Instead of formulas, we can use Excel Data Analysis Tools to calculate t value in Excel. This functionality is under the tab Data-Data Analysis.

If there is no Data Analysis under the Data tab, we can add it in several steps. Go to File-Options-Add-ins and select Analysis ToolPak. Click button Go, check the Analysis ToolPak check box and click OK. Figure 1. Run t Test in Excel

Click on the Data Analysis button, and several t Test options will appear: Figure 2. How to get tvalue in Excel

## One-Sample t Test in Excel

In the following example, we want to calculate the one sample t test in Excel. We want to check if the column “Value” means is significantly greater than 30. In the Data Analysis tool, there is no built-in option for one sample t test.

Because of that we will create a Dummy column with dummy zero data and choose t-Test: Two-Sample Assuming Unequal Variances: Figure 3. One sample t test in Excel

For Variable 1 Range select the data to be tested (in our example column B) and for Variable 2 Range select the Dummy column data. The Hypothesized Mean Difference is number 30 because we want to check if column B means is significantly greater than 30. Select the checkbox Labels and in Output options define the location of the data to be presented. Figure 4. One sample t test parameters Figure 5. The result of the one sample t test in Excel

Since t Stat is greater than t Critical one-tail and P(T<=t) one-tail is less than α, H0 hypothesis is rejected. Figure 6. Rejected H0 Hypothesis

## Two-Sample t Test in Excel

If we want to calculate two samples paired t test in Excel, in the Data Analysis tab we should choose t-Test: Paired Two Sample for Means.

For Variable 1 Range select the sample 1 range (column B) and for Variable 2 Range select the sample 2 data (column C) while the Hypothesized Mean Difference is 0. Select the checkbox Labels and in Output options define the location of the data to be presented. Figure 7. Two sample t test excel data inputs

Sample 2 data (column C) while the Hypothesized Mean Difference is 0. Select the checkbox Labels and in Output options define the location of the data to be presented. Figure 8. Two sample t test excel output

As a result H0 hypothesis is accepted because absolute t Stat value is less than t Critical one-tail.

## How to Do Unpaired t Test in Excel

To do unpaired t test in Excel we should select in the Data Analysis tab t-Test: Two-Sample Assuming Unequal Variances or t-Test: Two-Sample Assuming Equal Variances. In the following example we will do the unpaired t Test in Excel with unequal variances.

For Variable 1 Range we should select column B and for Variable 2 Range column C. The Hypothesized Mean Difference is 0 and alpha is 0.05. After selecting the checkbox Labels we should define in Output options the location of the data to be presented. Figure 9. Unpaired t test in excel –data inputs

Since absolute t Stat value is less than t Critical one-tail value and H0 hypothesis is accepted: Figure 10. Independent t test in excel assuming unequal variances

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