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Marking up Aggregate Data in the DDI

Marking up Aggregate Data in the DDI. William C. Block Minnesota Population Center. Marking up Aggregate Data: Some Definitions.

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Marking up Aggregate Data in the DDI

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  1. Marking up Aggregate Data in the DDI William C. Block Minnesota Population Center

  2. Marking up Aggregate Data: Some Definitions • <nCube>: An <nCube> is a mathematical matrix of between one and n dimensions where each and every cell of the matrix intersects each dimension at one and only one point. If the <nCube> is additive, the sum of the cells equals the universe of the <nCube>.

  3. Marking up Aggregate Data: Some Definitions • Using correct terminology. The table to the right is a one dimensional table that has three cells. It is not a 1x3 or 3x1 dimensional table. This table does not have three dimensions…it has three cells and only one dimension. • If this table were additive, the universe would equal 20.

  4. Marking up Aggregate Data: Some Definitions • <var> A <var> is used to define each dimension of an <nCube> and defines the points along a dimension using <catgry>. A one dimensional <nCube> has one <var>, a two dimensional <nCube> has two <var>’s, and so on.

  5. Marking up Aggregate Data: Some Definitions • <catValu> identifies the coordinate value 1, 2, 3, … n of each point along the <var>. For example, “<18” would have a <catval> of 1, “18-64” would have a <catval> of 2, etc.

  6. <nCube>? Why is it called an <nCube>? • Voorburg Compromise (April 2001), involving some tall Europeans and some short Americans.

  7. <nCube>? Why is it called an <nCube>? • Voorburg Compromise (April 2001), involving some tall Europeans and some short Americans. • A <matrix>? Why can’t we call it a <matrix>? Because that term means something specific in European data circles.

  8. <nCube>? Why is it called an <nCube>? • Voorburg Compromise (April 2001), involving some tall Europeans and some short Americans. • A <matrix>? Why can’t we call it a <matrix>? Because that term means something specific in European data circles. • A <cube>? Why can’t we call it a <cube>? Because that implies only 3 dimensions, and aggregate tables can have more than 3 dimensions.

  9. <nCube>? Why is it called an <nCube>? • Voorburg Compromise (April 2001), involving some tall Europeans and some short Americans. • A <matrix>? Why can’t we call it a <matrix>? Because that term means something specific in European data circles. • A <cube>? Why can’t we call it a <cube>? Because that implies only 3 dimensions, and aggregate tables can have more than 3 dimensions. • The compromise: <nCube> Which is an “n-dimensional Cube”…or matrix.

  10. Three steps to marking up aggregate data • Step 1: Mark up each <var>. • Step 2: Mark up each <nCube>. • Step 3: Markup the <locMap>.

  11. End of slideshow; proceed to “How to Markup Aggregate Data” document for more instructions.

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