Economic data methodology

How do you check whether a metric applies to your decision?

Start with four fields: measured object, period, geography and method. BI and BPS publish different types of provincial data, while JISDOR is a separate currency benchmark. They can be high-quality sources and still be unsuitable for a question about a particular asset. Source quality does not remove the boundary of applicability.

The short answer

Before concluding, complete one source card: what was measured, for which period, where, how, which records entered the sample and what cannot be inferred. If the card does not match your property question, the source remains context and the needed facts are requested separately.

Evidence scope

Checked on

2026-10-15

Established

• BI, BPS and JISDOR describe different measured objects, periods and scales.

Not established

• Any asset conclusion without address, records and applicable evidence.

The sample matters more than the impression

Two identical amounts cannot be compared if one is an asking price and the other a completed transaction; if one covers a month and the other a quarter; if one concerns a province and the other a street. First make the basis consistent, or honestly leave the comparison open.

A primary source does not settle everything

An official source is stronger than an unverified post, but it still answers only its own question. A BPS arrivals series does not become a rental dataset, and a BI report does not become a valuation. Respecting a source means not asking it to answer what it does not measure.

From data to a decision

After the source card, name the concrete next question. If it is price, you need a comparable asset sample. If payment, contract, recipient and bank quote. If permission, exact address and applicable record. Method is useful when it reduces uncertainty through action.

How not to age with a number

Keep link, check date and period, not just a screenshot. A new release replaces a specific contextual point. Asset evidence has its own update rhythm — price, availability, records and condition are checked separately.

Decision steps

1. Step 1

   State the decision you want to make.

2. Step 2

   Complete measured object, period, geography, method and limit.

3. Step 3

   Check whether the card matches your question.

4. Step 4

   Name the missing fact and source that may confirm it.

5. Step 5

   Do not draw an asset conclusion until asset evidence exists.

What to check

Sources

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