Fig. 6
From: The measure of socio-economic status in PISA: a review and some suggested improvements
(Source: PISA 2015 database and https://data.worldbank.org)
Students with low household possessions and international poverty rates. The smaller, shaded chart shows an enlargement of the shaded area in the larger chart. Pearson’s linear correlation coefficient between the two series is 0.85. Values for Australia, Austria, Belgium, Canada, Cyprus, the Czech Republic, Germany, Denmark, Finland, France, Ireland, Iceland, Luxembourg, Malta, the Netherlands, Norway, Slovenia, Sweden, Switzerland and the United Kingdom, all countries with a poverty headcount ratio at or below 1%, are also shown but not labelled in the charts