Statistics<N extends num> class

A statistics summary of a numeric collection.

Inheritance

Constructors

Statistics(num length, N min, N max, {N? medianLow, required N medianHigh, double? mean, double? standardDeviation, num? sum, num? squaresSum, BigInt? sumBigInt, BigInt? squaresSumBigInt, Statistics<N>? lowerStatistics, Statistics<N>? upperStatistics})
Statistics.compute(Iterable<N> data, {bool alreadySortedData = false, bool computeLowerAndUpper = true, bool keepData = false, bool useBigIntToCompute = false})
Computes a Statistics summary from data.
factory

Properties

center → N
The center value of the numeric collection. (Equivalent to medianHigh).
no setter
centerIndex → int
The center value index of the numeric collection: (length ~/ 2) (Equivalent to medianHighIndex).
no setter
data ↔ List<N>?
getter/setter pair
hashCode → int
The hash code for this object.
no setterinherited
isEmpty → bool
Returns true if length == 0.
no setter
isNotEmpty → bool
Returns true if length != 0.
no setter
length ↔ num
The length/size of the numeric collection.
getter/setter pair
lowerStatistics ↔ Statistics<N>?
Returns the computed Statistics of the lower part of the numeric collection, from index 0 (inclusive) to centerIndex (exclusive).
getter/setter pair
max ↔ N
The maximum value of the numeric collection.
getter/setter pair
mean ↔ double
Returns the mean/average of the numeric collection.
getter/setter pair
median → num
The median value. Also the average between medianLow and medianHigh.
no setter
medianHigh ↔ N
The higher median value. See median.
getter/setter pair
medianHighIndex → int
The medianHigh value index.
no setter
medianLow ↔ N
The lower median value. See median.
getter/setter pair
medianLowIndex → int
The medianLow value index.
no setter
min ↔ N
The minimal value of the numeric collection.
getter/setter pair
nType → Type
no setter
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
squaresMean → double
Returns the mean of squares.
no setter
squaresSum ↔ num
The total sum of squares of the numeric collection.
getter/setter pair
squaresSumBigInt ↔ BigInt
Same as squaresSum but as a BigInt.
getter/setter pair
standardDeviation ↔ double
The standard deviation of the numeric collection.
getter/setter pair
sum ↔ num
The total sum of the numeric collection.
getter/setter pair
sumBigInt ↔ BigInt
Same as sum but as a BigInt.
getter/setter pair
upperStatistics ↔ Statistics<N>?
Returns the computed Statistics of the upper part of the numeric collection, from index centerIndex (inclusive) to length (exclusive).
getter/setter pair

Methods

cast<T extends num>() → Statistics<T>
Casts this instance to Statistics<T>.
divideBy(num n) → Statistics<double>
Divide this statistics fields by n.
getDataFields() → List<String>
Returns the fields names of this DataEntry.
override
getDataMap() → Map<String, dynamic>
Returns the DataEntry as a Map of fields and values.
inherited
getDataValues() → List
Returns the fields values of this DataEntry.
override
isMeanInRange(double minMean, double maxMean, [double minDeviation = double.negativeInfinity, double maxDeviation = double.infinity]) → bool
Returns true if mean is in range of minMean and maxMean. Also checks if standardDeviation is in range of minDeviation and maxDeviation (if passed).
multiplyBy(num n) → Statistics<num>
Multiply this statistics fields by n.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
sumWith(Statistics<num> other) → Statistics<num>
Sum this statistics fields with other fields.
toString({int precision = 4}) → String
A string representation of this object.
override

Operators

operator +(Statistics<num> other) → Statistics<double>
operator /(Statistics<num> other) → Statistics<double>
operator ==(Object other) → bool
The equality operator.
inherited

Static Properties

maxSafeInt → int
Represents the maximum safe integer in JavaScript: (2^53 - 1)
final
maxSafeIntSqrt → int
Square root of maxSafeInt.
final