Statistics Calculator
Analyze datasets, calculate descriptive statistics, probabilities, and confidence intervals
Descriptive Statistics
Probability
Confidence Intervals
Example Datasets:
Test scores: 72, 85, 91, 68, 78, 89, 94, 81
Productivity: 15, 18, 22, 17, 20, 16, 19, 21
Height (cm): 165, 172, 180, 168, 175, 178, 182, 170
Basic Statistics
Count (n):
10
Sum:
310
Mean (Average):
31.00
Median:
30.00
Mode:
–
Dispersion
Range:
19.00
Variance:
44.22
Standard Deviation:
6.65
Quartile 1 (Q1):
26.50
Quartile 3 (Q3):
36.50
IQR:
10.00
Distribution
Skewness:
0.35
Kurtosis:
-0.80
Min:
23
Max:
43
Outliers:
None
Data Distribution
Probability Results
Probability:
0.5000
Z-Score:
0.00
Cumulative Probability:
0.5000
Complement:
0.5000
Distribution Parameters
Distribution:
Normal
Mean:
0.00
Variance:
1.00
Standard Deviation:
1.00
Additional Information
Skewness:
0.00
Kurtosis:
0.00
Mode:
0.00
Probability Distribution
Confidence Interval
Lower Bound:
48.04
Upper Bound:
51.96
Margin of Error:
1.96
Sample Statistics
Sample Size:
100
Point Estimate:
50.00
Standard Error:
1.00
Parameters
Confidence Level:
95%
Z-Score:
1.96
Interval Width:
3.92
Confidence Interval Visualization
How to Use This Calculator
- Descriptive Statistics: Enter a comma-separated dataset to calculate mean, median, mode, range, variance, and more.
- Probability: Calculate probabilities for normal, binomial, and Poisson distributions.
- Confidence Intervals: Determine confidence intervals for means or proportions.
- All calculations are performed in your browser – no data is sent to servers.
- Results update instantly and include visual representations of your data.