📊 Data Analysis
Statistics, analysis, and insights
Seasonal Index Calculator
Calculate seasonal indices for time series data to identify seasonal patterns
Data AnalysisNumber Range Statistics
Analyze and count numbers within specified ranges or intervals
Data AnalysisOutlier Detector
Detect outliers in numerical data using various statistical methods including IQR, Z-score, and modified Z-score
Data AnalysisRegression Analyzer
Advanced regression analysis tool for performing linear regression analysis, calculating regression statistics, and making predictions. Perfect for statistical modeling, trend analysis, forecasting, and understanding relationships between variables. Features: - Simple linear regression (y = mx + b) - Multiple linear regression support - Regression coefficients calculation - Statistical significance testing - R-squared and adjusted R-squared - Residual analysis and diagnostics - Prediction intervals and confidence intervals - Outlier detection in regression - Model validation metrics - Visual regression diagnostics - Data transformation support Common Use Cases: - Sales forecasting and trend analysis - Financial modeling and risk assessment - Scientific research and hypothesis testing - Quality control and process optimization - Marketing analytics and ROI analysis - Medical and biological research
Data AnalysisCorrelation Analyzer
Advanced correlation analysis tool that calculates correlation coefficients between variables to measure the strength and direction of their linear relationships. Perfect for statistical analysis, financial modeling, scientific research, and data exploration. Features: - Multiple correlation methods (Pearson, Spearman, Kendall) - Correlation matrix generation - Statistical significance testing (p-values) - Confidence intervals calculation - Heatmap visualization - Scatter plot matrix generation - Missing value handling strategies - Outlier detection and handling - Group analysis capabilities - Detailed statistical reports Common Use Cases: - Financial market analysis and risk assessment - Scientific research and hypothesis testing - Customer behavior and marketing analysis - Healthcare and medical data analysis - Quality control and process optimization - Educational performance evaluation
Data AnalysisQuartile Calculator
Calculate quartiles (Q1, Q2, Q3) for data. Supports multiple calculation methods (Excel, Minitab, SAS methods) and provides boxplot analysis, outlier detection, and data distribution analysis. Suitable for statistics, data analysis, and quality control.
Data AnalysisFrequency Distribution Generator
Generate frequency distribution tables for data with support for numeric grouping, custom ranges, percentage statistics, and more. Perfect for data analysis, statistical reports, and data visualization preparation.
Data AnalysisPercentile Calculator
Calculate percentiles for data. Supports multiple percentile calculation methods (nearest rank, linear interpolation, etc.) for statistical analysis, data science, grade analysis, and business metrics.
Data AnalysisConfidence Interval Calculator
Calculate confidence intervals for population means using Z or T distributions
Data AnalysisHarmonic Mean Calculator
Calculate harmonic mean for single or multiple datasets, with comprehensive statistical analysis and comparison
Data AnalysisGeometric Mean Calculator
Calculate geometric mean for single or multiple datasets, with comprehensive statistical analysis and comparison
Data AnalysisCovariance Calculator
Calculate covariance and correlation coefficient between two variables to measure their linear relationship
Data Analysis