Module statistics 

Structs

AnalysisContext

AnalysisResults

CategoricalStatistics

ColumnStatistics

ColumnStats

ComputeOptions

CorrelationMatrix

CorrelationPair

DistributionAnalysis

DistributionCharacteristics

DistributionInfo

NumericStatistics

OutlierAnalysis

OutlierRow

PercentileBreakdown

Enums

DistributionType

IqrPosition

OutlierMethod

Constants

SAMPLING_THRESHOLD

Default sampling threshold: datasets >= this size are sampled. Used as fallback when sample_size is None. App uses config value.

Functions

analysis_results_from_describe

Builds describe-only AnalysisResults from a list of column statistics.

calculate_fit_quality

Calculates fit quality (p-value) for a given distribution type.

calculate_theoretical_bin_probabilities

Calculates probabilities for each bin defined by bin_boundaries.

calculate_theoretical_probability_in_interval

Calculates the probability that a value falls in [lower, upper] for the given distribution.

collect_lazy

Collects a LazyFrame into a DataFrame.

compute_correlation_matrix

Computes pairwise Pearson correlation matrix for all numeric columns.

compute_correlation_pair

Computes correlation statistics for a pair of columns.

compute_correlation_statistics

Computes correlation matrix if not already present in results.

compute_describe_column

Computes describe statistics for a single column of an already-collected DataFrame.

compute_describe_from_lazy

Computes describe statistics from a LazyFrame without materializing all rows. When sampling is disabled, runs a single aggregation collect (like Polars describe) for similar performance. When sampling is enabled, samples then runs describe on the sample.

compute_describe_single_aggregation

Computes describe statistics in a single aggregation pass over the DataFrame. Uses one collect() with aggregated expressions for all columns (count, null_count, mean, std, min, percentiles, max).

compute_distribution_statistics

Computes distribution statistics for numeric columns.

compute_statistics

Computes statistics for a LazyFrame with default options.

compute_statistics_with_options

Computes comprehensive statistics for a LazyFrame.

sample_dataframe

Samples a LazyFrame for analysis when row count exceeds threshold. Used by chunked describe.