Chi-squared test. A chi-squared test, also written as Ï 2 {\displaystyle \chi ^{2}} test, is any statistical hypothesis test wherein the sampling distribution of the test statistic is a chi-squared distribution when the null hypothesis is true.
volcanoes can also occur at hot spots such as at the areas of the hawaiian islands and yellowstone in america this type of volcano forms when magma from the mantle rises to earth s surface through a certain spot in the middle of the plate i e the pacific plate for the hawaiian islands
at fault lines, or places of crustal activity :) Volcanoes usually form near plate boundaries where subduction is occurring. This causes magma from the mantle to rise up ont â¦ o Earth's surface and form volcanoes.