Advanced Statistics

Free statistics calculators: Z-score, p-value, confidence intervals, sample size, permutations, combinations, LCM, GCF and rounding.

Z-Score Calculator

Calculate Z-score, percentile, and probabilities for the standard normal distribution.

Calculate the p-value from a test statistic to determine statistical significance.

Calculate confidence intervals for population means and proportions.

Determine the sample size needed to estimate means or proportions with desired precision.

Calculate permutations and combinations with and without repetition for counting problems.

Calculate the percent error between an experimental value and a theoretical or accepted value.

Perform long division step by step showing the complete process with quotient, remainder, and decimals.

Calculate the Least Common Multiple (LCM) of two or more numbers with prime factorization.

Calculate the Greatest Common Factor (GCF) of two or more numbers with prime factorization.

Round numbers using different methods: standard, up, down, banker's rounding, and significant figures.

Calculate Z-scores and p-values to determine the statistical significance of your results. Essential tools for statistical analysis and research.

Determine confidence intervals and calculate the required sample size for your studies. Plan research with the precision you need.

Calculate permutations and combinations for counting problems. Find the LCM and GCF of numbers with step-by-step prime factorization.