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Geo-statistics and Scales

Geo-statistics and Scales. Mathieu Vliegen. Outline. Referencing statistical output and scales in small area statistics Comparison of scales: differentiation analysis Results of analysis for the 3 biggest cities in the Netherlands What does the analysis tell us?. Referencing and scales.

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Geo-statistics and Scales

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  1. Geo-statistics and Scales Mathieu Vliegen EFGS Workshop, The Hague, Netherlands

  2. Outline • Referencing statistical output and scales in small area statistics • Comparison of scales: differentiation analysis • Results of analysis for the 3 biggest cities in the Netherlands • What does the analysis tell us? EFGS Workshop, The Hague, Netherlands

  3. Referencing and scales Referencing Scales Postal areas Sub-city areas Grid squares • Regional • Spatial • Geometrical EFGS Workshop, The Hague, Netherlands

  4. Differentiation analysis • Range analysis: difference between highest and lowest scale value • Homogeneity analysis: variation coefficient = standardized standard deviation of the scale value distribution (standard deviation / value of the relevant territorial unit ) EFGS Workshop, The Hague, Netherlands

  5. Scales used in the analysis • Postal areas • Sub-city areas • Grid squares • 4-digit (e.gr. 2203) • 5-digit (e.gr. 2203H) • Districts • Neighbourhoods • 500 x 500 m • 100 x 100 m EFGS Workshop, The Hague, Netherlands

  6. Variables analysed • Population aged 65 and over (%) • Population with non-western foreign background (%) • One-person household (%) • Private housing (% dwellings) • Average ratable value dwellings EFGS Workshop, The Hague, Netherlands

  7. Key figures: Population EFGS Workshop, The Hague, Netherlands

  8. Key figures: Households EFGS Workshop, The Hague, Netherlands

  9. Key figures: Housing EFGS Workshop, The Hague, Netherlands

  10. Number of small areal units EFGS Workshop, The Hague, Netherlands

  11. Small areal units: average population EFGS Workshop, The Hague, Netherlands

  12. Amsterdam: Variation coefficients EFGS Workshop, The Hague, Netherlands

  13. Rotterdam: Variation coefficients EFGS Workshop, The Hague, Netherlands

  14. The Hague: Variation coefficients EFGS Workshop, The Hague, Netherlands

  15. What does the analysis tell us? • Awareness of the implications of the areal scale with respect to the statistics produced at that scale (how to lie with statistics?) • Definition as detailed as possible of the area scale used in order to protect users for possible pitfalls using the statistics in question EFGS Workshop, The Hague, Netherlands

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