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## Correlations > Education Statistics > Public Libraries > Total Collection Expenditures (per capita)

DEFINITION: This is the sum of all expenditures for print materials, electronic materials, and other materials. Per capita figures expressed per 1 population.
 VIEW DATA: Totals Per capita Per \$ GDP
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### Correlations between Education > Public Libraries > Total Collection Expenditures (per capita) ...

A correlation is a statistical measure of similarity between at least two given sets of data. StateMaster's correlations compare two variables from our database and reveal statistical relationships between them. The percentages you see represent the strength (or likelihood) that a change in the topic variable is matched by a change in the listed variables below it. But remember: These correlations do not imply causation, that is, one does not necessarily cause the other. Also, not all variables contain all states, rather subsets of states matched together.

#### NOTES:

• Outliers have been removed only where they are outside 3 standard deviations of the mean.
• Only variable pairs where at least 15 states match for each have been considered.
• Strength is given by the correlation coefficient (R squared). It is the fraction of variation in Y that can be attributed to the variation in X. 100% signifies a perfect fit (R squared of 1). The top 50 such stats are displayed