Cara Menghitung Data Analysis

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A data analysis tool detects outliers using the IQR method or z-scores, and computes descriptive statistics. Outlier detection is the first step in data cleaning.

Rumus

IQR = Q3 − Q1

IQR: Q3 − Q1 — Q3 − Q1
Q3: Q3 value — Variable used in the calculation
Q1: Q1 value — Variable used in the calculation

Panduan Langkah demi Langkah

1IQR = Q3 − Q1
2Outlier: value < Q1−1.5×IQR or > Q3+1.5×IQR
3Z-score: (x − mean)/SD; outlier if |z| > 2 or 3
4IQR method is robust; z-score assumes normal distribution

Contoh Terpecahkan

Masukan

Dataset: 2,3,4,5,6,100 — IQR method

Hasil

Upper fence=10.25 → 100 is an outlier

Pertanyaan yang sering diajukan

What is Data Analysis?

A data analysis tool detects outliers using the IQR method or z-scores, and computes descriptive statistics. Outlier detection is the first step in data cleaning

How accurate is the Data Analysis calculator?

The calculator uses the standard published formula for data analysis. Results are accurate to the precision of the inputs you provide. For financial, medical, or legal decisions, always verify with a qualified professional.

What units does the Data Analysis calculator use?

This calculator works with inches. You can enter values in the units shown — the calculator handles all conversions internally.

What formula does the Data Analysis calculator use?

The core formula is: IQR = Q3 − Q1. Each step in the calculation is shown so you can verify the result manually.