Numeric

• No commas

  • e.g. "1000" instead of "1,000"

• No units of measurement

  • Units should be in metadata instead

• Express as full number where possible

  • e.g. "1200000" instead of "1.2" (million)

  • If rounded, indicate in metadata

• No rounding if possible

  • Give raw numbers as far as possible

  • If rounding is needed, try to provide at least 2 decimal places of precision and indicate rounding in metadata

• Percentages can be expressed as either a proportion out of 1 or 100.

  • e.g. 20% can be expressed as 20 or 0.2

  • The representation of percentages must be consistent throughout your dataset (e.g. among different percentage fields)

  • You must indicate how percentages are expressed in the data dictionary