Descriptive Statistics
Data (comma-separated)
Enter numbers separated by commas.
Calculate Descriptive Stats
Mean:
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Median:
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Mode:
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Range:
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Variance:
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Std Dev:
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Q1:
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Q3:
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IQR:
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Probability
n (sample size)
p (probability of success)
x (number of successes)
Calculate Binomial Probability
P(X = x):
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Formula: C(n,x) * p^x * (1-p)^(n-x)
Confidence Interval for Mean
Sample Mean
Sample Std Dev
Sample Size (n)
Confidence Level
90%
95%
99%
Calculate Confidence Interval
Confidence Interval:
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Formula: mean ± z* * (std / sqrt(n))
Hypothesis Test for Proportion
Null hypothesis p0
Sample proportion p̂
Sample size (n)
Calculate Test Statistic
z-test statistic:
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Formula: (p̂ - p0) / sqrt(p0(1-p0)/n)