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How to Calculate T-Statistic.
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How to Calculate T-Statistic.

Rosemary Njeri

T-statistic is the ratio of the departure of the estimated value of a parameter from its hypothesized value to its standard error.

The t-value measures the size of the difference relative to the variation in your sample data.

T-statistic is used when the sample size is less than 30 units or the population standard deviation is unknown.

Formula to calculate t-statistic.

How to Calculate T-Statistic.
  • X-bar is the sample mean.
  • μ is the population mean.
  • S is the sample standard deviation.
  • n is the number of units in the sample.

Example:

If the population mean is 6 and the sample mean is 8, calculate the t-statistic if the standard deviation is 4 and the number of units in the sample is 16.

How to Calculate T-Statistic.

Therefore, your t-statistic is 2.

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