Easily calculate the confidence interval for your regression coefficient (beta) with our free online tool. Input your estimated coefficient, standard error, degrees of freedom, and critical t-value to get the lower and upper bounds of the interval. Perfect for statistical analysis and interpreting linear regression results.
Formula:
The confidence interval for a regression coefficient (β) is calculated as:
CI = b ± (t* × SEb)
Where:
- b: The estimated regression coefficient (slope).
- t*: The critical t-value for the desired confidence level and degrees of freedom.
- SEb: The standard error of the estimated regression coefficient.