Worked-example setupScope and assumptions
- Nominal GDP 1,080 and real GDP 1,000 share one fictional period, geography, and release basis.
- Previous real GDP 970 uses the same real-price convention; labor hours 50 million align with current real output.
- Period
- Fictional year 1 to year 2
- Units
- billions of currency and real-output units; millions of labor hours
- Rounding
- Full precision internally; rates to two decimal percentage points
The same packet supports three calculations only because every input states its price basis and period.
implicit deflator = 1,080 / 1,000 × 100 = 108
real growth = (1,000 - 970) / 970 = 3.09%
productivity = 1,000 / 50 = 20 real-output units per hour unit
The deflator level of 108 is not an 108% inflation rate. Growth uses two real levels, not nominal GDP. Productivity is a ratio of output to hours, not a measure of worker effort or pay.
An official chain-type system may not make real components additive, and a published productivity series may use a different output or labor scope. This fictional arithmetic teaches the control structure, not a shortcut around the agency's methods or release notes.
Verified calculation · economics foundations analysis
The curriculum loader recomputed this example before it entered the site build. Expand any structured input to inspect the stated facts.
- aggregate output
- 1 field
Inspect data
{
"cedar_output": {
"consumption": 700,
"exports": 90,
"government_consumption_and_investment": 220,
"gross_private_domestic_investment": 180,
"imports": 110,
"labor_hours": 50,
"previous_real_gdp": 970,
"real_gdp": 1000,
"reported_nominal_gdp": 1080
}
}Recomputed result
| Measure | Value |
|---|---|
| gdp deflator | 108 |
| labor productivity | 20 |
| real growth rate | 0.0309 |