# T-Value Calculator

## Calculate Score for T-Distribution

When you take a peek at t-distribution table or the t-statistic calculator, you can see that one needs to know what the “df” actually symbolizes. “df” is the “degrees of freedom” which is just one less than the sample size.

• Step-1: Subtract 1 from the sample size. This is the "df".
• Step-2: Look for the "df" towards the left side of any t-distribution table. Locate this column below the alpha level.

## What is T-Distribution?

T-Distribution, also known as Student’s T Distribution is a family comprised of distributions that seem almost identical with regards to the curve for normal distribution. However, it is a bit smaller and wider. T-distribution comes in use when there are small samples available. With an increase in the size of the sample, t-distribution starts looking more like normal distribution. For sample size that exceeds 20, t-distribution seems exact the same as normal distribution. With the help of a t-distribution table, one can easily calculate the score for the same.

## T-Distribution Calculator

• T-distribution Calculator helps make the computation of cumulative probabilities an easy task. It is based on the t-statistics that calculates all the cumulative probabilities.
• For calculation of t-value with the t-value calculator, one needs to have in place the following variables.
• df or Degrees of Freedom
• T-Score
• Probability: P(T< t)
• The t-value calculator helps with an easy t-score calculation that is similar to the conversion of Celsius to Fahrenheit. The formula for B score to C score conversion is: T= (B x 10) + 50

T-score is the standardized statistic test that enables one to obtain individual score while transforming it to the common form for comparison of scores. The formula for t-score for the t-score calculator is: T= t = [x̄ - μ0] / [s / sqrt( n ) ]
Here:

• x̄ = Sample Mean
• μ0 = Population Mean
• n = Sample Size
• s = Sample Standard Deviation

## T-Critical Value Calculator influencers: -

The T-Critical Value Calculator is influenced by various factors which include:

• Number of items in the sample
• Mean of the sample
• Mean of population source from where the sample has been drawn
• Sample Standard Deviation