Statistics

Continuity Correction Calculator

Apply a ±0.5 continuity correction to a discrete value.

Parameters Live Compute
Calculated Output
Corrected boundary 10.5
Formula: Adjust x by ±0.5 to approximate discrete with continuous
Step-by-Step Breakdown
1. Values used:
2. Value = 10
3.
4. Corrected boundary = 10.5
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When approximating a discrete distribution with a normal curve, shift boundaries by 0.5.

The math behind it

P(X ≤ x) uses x + 0.5; P(X ≥ x) uses x − 0.5, and so on, to cover each integer's full width.

Worked Example

P(X ≤ 10) → use 10.5 in the normal approximation.

Frequently Asked Questions

Why correct?

It compensates for replacing discrete bars with a smooth curve.

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