IFS-Integrated-Farm-Statistics

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changes.mady.by.user Denisa Camelia FLORESCU

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  • HA (hectares),
  • HD (heads),
  • THS_HEADS (1000 heads),
  • HIVE (hives),
  • LSU (livestock units),
  • EUR (euro),
  • PLC (places),
  • PERS (persons), or
  • AWU (annual working units).

Examples include permanent crops (HA), plants harvested green (HA), pigs (LSU), live bovine animals (HD), poultry (THS_HD), total livestock units (LSU), family labour force (AWU), non-family labour force (PERS) or Laying hens (PLC).

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For shares, Eurostat decided to use the same formula as for proportions. This decision was taken to simplify calculations. Eurostat performed an analysis which showed that there are no significant differences between the standard errors obtained using the formula for proportions and the standard errors obtained using the formula for ratios (see section "Ratios", sub-section  "Variance estimation in IFS and FSS for European aggregates").

Where:
 is the VARPROP at country level (REGION=”COUNTRY”), for the same combination of dimension values as the EU aggregate in question. For example, if the line of the EU aggregate has dimensions FARMTYPE=”FT23_SO”, SO_EUR=”KE15-24”, AGRAREA=”HA5-9”, then the formula includes the 27 VARPROPs corresponding to the lines where REGION=”COUNTRY”, FARMTYPE=”FT23_SO”, SO_EUR=”KE15-24”, AGRAREA=”HA5-9”.

 is the TOTAL_WGT at country level (REGION=”COUNTRY”), for the same combination of dimension values as the EU aggregate in question. For example, if the line of the EU aggregate has dimensions FARMTYPE=”FT23_SO”, SO_EUR=”KE15-24”, AGRAREA=”HA5-9”, then the formula includes the 27 TOTAL_WGTs corresponding to the lines where REGION=”COUNTRY”, FARMTYPE=”FT23_SO”, SO_EUR=”KE15-24”, AGRAREA=”HA5-9”.

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RATIOS

Variance estimation in IFS

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  1. for total of continuous variables and some ratios, the system is based on the values of coefficients of variation:

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Where totals are zero in tables, the corresponding coefficients of variations cannot be technically computed (because they are obtained dividing by zero) and are calculated null (.). The quality rating system classifies these cases as "below 24.99%", which means the zero totals are published.

  1. for proportions, the shares and some ratios the system is based on the values of standard errors:

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