Standard Deviation Calculator
Enter numbers separated by commas to calculate standard deviation and other statistics.
Results
Result Summary
Standard Deviation, σ:
0
Count, N:
0
Sum, Σx:
0
Mean, μ:
0
Variance, σ²:
0
Calculation Steps
Step 1: Calculate the variance (σ²)
σ² = Σ(xi – μ)² / N
Step 2: Calculate the standard deviation (σ)
σ = √σ²
Margin of Error (Confidence Intervals)
The sampling mean most likely follows a normal distribution. The standard error of the mean (SEM) is:
σx̄ = σ / √N = 0
Based on the SEM, the following are the margins of error at different confidence levels:
| Confidence Level | Margin of Error | Confidence Interval |
|---|
Frequency Table
| Value | Frequency |
|---|