How To Do a T Test In Google Sheets

How to Do a T-Test in Google Sheets

Using the T.TEST Function

To perform a t-test in Google Sheets, you need to use the T.TEST function. This function helps determine if two samples come from the same underlying population. The T.TEST function requires specific arguments to work correctly.

T.TEST Function Syntax

The syntax for the T.TEST function is T.TEST(range1, range2, tails, type). Here, range1 and range2 are the datasets you want to compare. The tails parameter specifies the number of distribution tails, and the type parameter defines the type of t-test you want to perform.

Understanding the Arguments

range1: This is the first sample of data or group of cells used in the t-test. This argument is required.

range2: This is the second sample of data or group of cells used in the t-test. This argument is also required.

tails: This optional numeric argument specifies the number of distribution tails. Use 1 for a one-tailed distribution and 2 for a two-tailed distribution.

type: This optional numeric argument specifies the type of t-test. Use 1 for a paired test, 2 for a two-sample equal variance (homoscedastic) test, and 3 for a two-sample unequal variance (heteroscedastic) test.

Steps to Perform a T-Test

1. Select the cells containing your first dataset for range1.

2. Select the cells containing your second dataset for range2.

3. Input the tails argument as 1 or 2, depending on whether you want a one-tailed or two-tailed distribution.

4. Specify the type argument as 1, 2, or 3, corresponding to a paired test, two-sample equal variance test, or two-sample unequal variance test.

5. Enter the T.TEST function into a cell in Google Sheets using the syntax: =T.TEST(range1, range2, tails, type).

Reading the Results

The T.TEST function will return the probability associated with the t-test. This helps in determining if the differences between your two samples are statistically significant.

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