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t-Test Calculator

Perform a t-test to determine if there is a significant difference between two groups.

t-Test Calculator
Enter numbers for Group 1 separated by comma [example1], space [example2] or line break [example3]:
Enter numbers for Group 2 separated by comma [example1], space [example2] or line break [example3]:
Precision:

Embed t-Test Calculator Widget

About t-Test Calculator

t-Test Calculator is a tool used to determine whether there is a statistically significant difference between the means of two independent groups.

What is a t-Statistic?

The t-Statistic is a value derived from your sample data that measures the size of the difference relative to the variation in your sample data. It is calculated using the following formula:

\( t = \frac{\bar{X}_1 - \bar{X}_2}{\sqrt{\frac{s_1^2}{n_1} + \frac{s_2^2}{n_2}}} \)

Where:
\( t \) = t-Statistic
\( \bar{X}_1, \bar{X}_2 \) = Means of Group 1 and Group 2
\( s_1^2, s_2^2 \) = Variances of Group 1 and Group 2
\( n_1, n_2 \) = Sample sizes of Group 1 and Group 2

A higher absolute value of the t-Statistic indicates a greater difference between the groups relative to the variability within the groups.

What is a p-Value?

The p-Value represents the probability of observing the calculated t-Statistic, or one more extreme, assuming that the null hypothesis is true. In other words, it helps determine the significance of your results.

\( p = P(T > |t|) \)

Where:
\( p \) = p-Value
\( T \) = t-Statistic

Use Cases of t-Test

The t-Test is widely used in various fields to compare the means of two groups. Here are some common use cases:

By using the t-Test Calculator, researchers and professionals can make informed decisions based on statistical evidence, ensuring that observed differences are meaningful and not just due to random variation.

References:

Student's t-test Wikipedia

Reference this content, page, or tool as:

"t-Test Calculator" at https://MiniWebtool.com/t-test-calculator/ from MiniWebtool, https://MiniWebtool.com/

by miniwebtool team. Updated: Oct 29, 2024

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