Using a T Table for Statistical Analysis | Guide and Tips

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moonman239
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I saw a http://www.math.unb.ca/~knight/utility/t-table.htm" [Broken] on the Internet that Redbelly told me about. How do I use it? Don't bother me about one and two tailed tests - that part I can deal with.
 
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In a one-tailed test, a t-distribution with 10 deg. of freedom has 10% probability outside (e.g. either "to the right" or "to the left," but not both) of the point t = 1.372 on the horizontal axis.
 

1. What is a T Table and when is it used for statistical analysis?

A T Table, also known as a Student's T Table, is a chart that contains critical values of the Student's t-distribution. It is used to determine the probability of obtaining a certain t-value in a t-test, a statistical test used to compare the means of two groups. T Tables are used when the sample size is small and the population standard deviation is unknown.

2. How do I read a T Table?

To read a T Table, you first need to determine the degrees of freedom (df) for your data. This is determined by subtracting 1 from the sample size. Next, find the row that corresponds to your df and the column that corresponds to the desired level of significance (usually 0.05 or 0.01). The intersection of these two values will give you the critical t-value.

3. Can I use a T Table for one-tailed and two-tailed tests?

Yes, a T Table can be used for both one-tailed and two-tailed tests. For a one-tailed test, divide the desired level of significance by 2 and use the resulting value to find the critical t-value. For a two-tailed test, simply use the full desired level of significance to find the critical t-value.

4. Is it necessary to use a T Table for statistical analysis?

No, it is not necessary to use a T Table for statistical analysis. Other methods, such as using statistical software or calculating the p-value, can also be used to determine the significance of results in a t-test. However, T Tables can be a useful tool for those who prefer to manually calculate statistical values.

5. Are there different types of T Tables?

Yes, there are different types of T Tables based on the type of t-distribution being used. The most commonly used T Table is for the Student's t-distribution, which assumes a normal distribution of data. Other types include the Chi-Square t-distribution and the F t-distribution. It is important to use the correct T Table for the specific type of analysis being performed.

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