數學與統計

Descriptive statistics, percentiles, correlation, combinations, permutations, factorials and prime factorisation.

統計計算機Mean, median, mode, range, variance, standard deviation, standard error, quartiles and IQR from a list of numbers.百分位計算機Compute any percentile of a data set with linear interpolation, plus all deciles.相關性計算機Pearson and Spearman correlation, r², and the least-squares regression line for paired data.組合計算機C(n,r) with exact BigInt arithmetic and a list of the actual combinations for small inputs.排列計算機P(n,r) ordered arrangements computed exactly with BigInt — no floating point rounding.質數 Factorization 計算機Break any integer into prime factors and list every divisor with the divisor count.質數數字檢查器Test whether a number is prime and, if not, show its smallest divisors and divisor count.PrimesUpToNList every prime number up to a limit, with the count.Math 運算式計算機Evaluate arithmetic expressions with correct precedence, powers, factorials, functions and constants.分數計算機Simplify fractions, convert decimals to exact fractions and add, subtract, multiply or divide them.十進位 to 分數Convert any decimal to its exact simplest fraction using continued-fraction search with a tolerance.AddandSubtractFractionsAdd, subtract, multiply or divide fractions with the common denominator and GCD reduction shown.DropbytesCuts a slice of the specified number of bytes out of the data. Negative values are allowed.MeanComputes the mean (average) of a number list. If an item in the string is not a number it is excluded from the list. e.g. 0x0a 8 .5 .5 becomes 4.75RotateleftRotates each byte to the left by the number of bits specified, optionally carrying the excess bits over to the next byte. Currently only supports 8-bit values.RotaterightRotates each byte to the right by the number of bits specified, optionally carrying the excess bits over to the next byte. Currently only supports 8-bit values.SleepSleep causes the recipe to wait for a specified number of milliseconds before continuing execution.StandardDeviationComputes the standard deviation of a number list. If an item in the string is not a number it is excluded from the list. e.g. 0x0a 8 .5 becomes 4.089281382128433TakebytesTakes a slice of the specified number of bytes from the data. Negative values are allowed.