1.917029
3.757377
71.542623
79.057377
7.514753
4.9899
%
1.917029
3.757377
71.542623
79.057377
7.514753
4.9899
%
The Confidence Interval Calculator computes the range within which the true population mean is likely to fall, based on sample statistics. A confidence interval provides more information than a point estimate alone, expressing both the best estimate of the parameter and the uncertainty around it.
A 95% confidence interval means that if the experiment were repeated many times, 95% of the calculated intervals would contain the true population mean.
The confidence interval is calculated as:
CI = Mean ± z × (SD / √n)
Inputs
Results
We are 95% confident the true mean enzyme activity is between 71.54 and 79.06 units.
Inputs
Results
With 100 measurements, the 99% CI is very narrow, reflecting high precision.
It means that if you collected 100 different random samples and computed a CI from each, approximately 95 of those intervals would contain the true population mean.
95% confidence is standard in most biological research. Use 99% when you need higher confidence in safety-critical applications.
Increase sample size, reduce variability through better experimental control, or accept a lower confidence level.
Roboculator Team
The Roboculator Team explains calculations, planning tools, and practical formulas in clear language for real-life situations.
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