IQ Guide

Understand IQ scores, percentiles, and what Raven-style matrices typically measure.

IQ test Ranking

Guides

What is the average IQ? (Meaning, distribution, cautions)
A practical explanation of what “average IQ” means under standardization and distribution assumptions.
What percentile is IQ 120/130? (Normal approximation example)
Using a normal distribution example (mean 100, SD 15) to interpret IQ 120/130 as rough percentiles.
What are Raven-style matrices? (What they test and how to solve)
Common rule families (row/column patterns) and a practical solving routine for nonverbal matrix items.
Why do IQ scores vary? (State, practice effects, strategy)
Even for the same person, performance can change with conditions. Here are common causes and how to interpret variability.

Suggested order: 1) learn score/percentile basics, 2) review matrix rule patterns, and 3) account for variability and retest conditions.

Start tests directly, and use ranking pages for trends.

Sharing uses public share pages (/share/...) rather than personal result pages.

Is this an official IQ score?

It should be treated as an online estimate rather than an official clinical qualification.

What percentile is IQ 120/130?

You can compute a worked example under a normal approximation, but real norms can differ.

Why do my results vary?

Focus, fatigue, practice effects, device differences, and time pressure can introduce variability.

What do Raven-style matrices measure?

They often focus on extracting and combining nonverbal pattern rules.

What matters beyond the number?

Look at interpretation patterns and variability factors, not only a single score.

How do I share results?

Personal result pages are noindex; sharing is guided via public share landing pages.