Salary data is everywhere — and misread almost as often as it's read. The same occupation can honestly be described as paying $60,000 or $110,000 depending on which statistic gets quoted. Before you make a career or education decision based on a number, here's how to actually interpret one.
Median beats mean, and you should know why
Most careless salary claims quote averages (means), which get dragged upward by a small number of very high earners. The median — the person exactly in the middle — is the honest anchor: half of workers earn more, half earn less. When a field has a few superstar earners (law, sales, finance), the mean can sit dramatically above what a typical person makes. Our listings use medians for exactly this reason, and BLS data — the gold standard for U.S. occupations — is organized around them.
The range matters more than the point
Two careers with the same $75,000 median can be completely different bets. One might span $65,000–$85,000 (a compressed, predictable range — think government roles), the other $40,000–$160,000 (a wide range where your outcome depends heavily on performance, firm, and location — think sales or law). Always look for the 10th and 90th percentile figures. The 90th percentile tells you the realistic ceiling; the 10th tells you the realistic floor if things go badly. You should make decisions based on the middle of the range and treat the top as upside, not expectation.
National numbers hide local reality
A national median blends San Francisco with rural Mississippi. Software salaries in major coastal metros can run double the national figure; the same is true in reverse for lower-cost regions. But the raw salary isn't the point — purchasing power is. An $85,000 salary in a city with $2,900 median rent can leave less in your pocket than $62,000 where rent is $1,100. When comparing locations, always net out housing costs before deciding which offer is actually larger.
Base salary is not total compensation
Listed medians are typically base wages. Depending on the field, real earnings can differ significantly: overtime routinely adds 20–40% in trades, nursing, and law enforcement; equity and bonuses can double top-of-market tech compensation; commission structures define sales income entirely. Conversely, some headline figures assume overtime that isn't guaranteed. When researching a specific field, learn its compensation structure, not just its number.
Watch the data's age and source
Salary data lags reality by one to two years even from the best sources, and fields move — fast-growing occupations often out-earn their published medians, while declining fields underperform theirs. Prefer primary sources (BLS Occupational Employment and Wage Statistics, state labor departments) over crowdsourced sites, which skew toward self-selected reporters in higher-paying metros. Every figure on CareerLookAI is an estimate designed for comparison and exploration — and we say this on every career page: verify against BLS.gov before making a major decision.
The five-second checklist
- Is this a median or a mean?
- What's the 10th–90th percentile range?
- Is this national, or my region?
- Base only, or total compensation?
- How old is the data, and is the field growing or shrinking?
Run every salary claim through those five questions and you'll read career data better than most of the people writing about it.