Enter Calculation
Advertisement
Confidence Interval Calculator
Results
95% Confidence Interval
9.3054 to 11.0946
Margin of Error: ±0.8946
Standard Error
0.4564
Z-Score
1.96
Mean
10.2
Sample Size
30
Std Dev
2.5
Related calculators
-
Combinations Calculator
Enter total items (n) and items to choose (r) to get the number of combinations nCr instantly—useful for probability, sampling, and counting.
-
Cosecant Calculator
Enter an angle in degrees to get its cosecant (csc) instantly—compute 1/sin(x), see the csc value, and speed up trigonometry tasks.
-
Probability Between Two Z-Scores Calculator
Enter lower and upper z-scores to get the area under the standard normal curve between them, plus left and right tail probabilities.
-
Z-Score to Percentile Calculator
Enter a Z-score to get the percentile rank, plus the area to the left and area to the right under the standard normal curve.
-
Hyperbolic Cotangent Calculator
Calculate hyperbolic cotangent (coth) with this easy-to-use calculator. Enter any number to instantly find its coth value. Ideal for mathematicians, students, and engineers.
Utilities
-
Stopwatch
Use this online stopwatch to measure time intervals precisely. Start, stop, and reset with ease.
-
Countdown Timer
Free online countdown timer. Set hours, minutes, and seconds to count down easily. Simple, fast, and useful for work, study, or daily tasks.
-
Counter
Simple online counter tool. Increase, decrease, or reset numbers instantly. Set custom step values and limits with ease.
-
Online Alarm Clock
Use our free online alarm clock to wake up, stay on schedule, or manage tasks. Set alarms quickly and customize sound and time right in your browser.