Immigrants from Bulgaria vs South American 9th Grade

The statistical analysis conducted on geographies consisting of 172,552,181 people shows a near-perfect negative correlation between the proportion of Immigrants from Bulgaria and percentage of population with at least 9th grade education in the United States with a correlation coefficient (R) of -0.923 and weighted average of 95.5%. Similarly, the statistical analysis conducted on geographies consisting of 494,065,697 people shows a poor positive correlation between the proportion of South Americans and percentage of population with at least 9th grade education in the United States with a correlation coefficient (R) of 0.164 and weighted average of 93.9%, a difference of 1.6%.

9th Grade Correlation Summary

Measurement	Immigrants from Bulgaria	South American
Minimum	52.9%	83.3%
Maximum	100.0%	100.0%
Range	47.1%	16.7%
Mean	94.7%	93.7%
Median	96.8%	94.0%
Interquartile 25% (IQ1)	95.3%	92.2%
Interquartile 75% (IQ3)	98.5%	95.4%
Interquartile Range (IQR)	3.2%	3.1%
Standard Deviation (Sample)	9.8%	3.6%
Standard Deviation (Population)	9.5%	3.6%

Similar Demographics by 9th Grade

Demographics Similar to Immigrants from Bulgaria by 9th Grade

In terms of 9th grade, the demographic groups most similar to Immigrants from Bulgaria are Chickasaw (95.5%, a difference of 0.0%), Osage (95.5%, a difference of 0.0%), Immigrants from Zimbabwe (95.5%, a difference of 0.010%), Immigrants from Norway (95.5%, a difference of 0.020%), and Cherokee (95.4%, a difference of 0.020%).

Demographics	Rating \| Rank	9th Grade
Potawatomi	97.7 /100 \| #103	Exceptional 95.5%
Syrians	97.4 /100 \| #104	Exceptional 95.5%
Immigrants \| France	97.4 /100 \| #105	Exceptional 95.5%
Immigrants \| Norway	97.1 /100 \| #106	Exceptional 95.5%
Immigrants \| Zimbabwe	96.9 /100 \| #107	Exceptional 95.5%
Chickasaw	96.8 /100 \| #108	Exceptional 95.5%
Osage	96.8 /100 \| #109	Exceptional 95.5%
Immigrants \| Bulgaria	96.7 /100 \| #110	Exceptional 95.5%
Cherokee	96.3 /100 \| #111	Exceptional 95.4%
Immigrants \| Croatia	96.2 /100 \| #112	Exceptional 95.4%
Iroquois	96.2 /100 \| #113	Exceptional 95.4%
German Russians	96.1 /100 \| #114	Exceptional 95.4%
Burmese	96.0 /100 \| #115	Exceptional 95.4%
Immigrants \| Europe	95.7 /100 \| #116	Exceptional 95.4%
Immigrants \| Romania	95.6 /100 \| #117	Exceptional 95.4%

Demographics Similar to South Americans by 9th Grade

In terms of 9th grade, the demographic groups most similar to South Americans are Pima (93.9%, a difference of 0.010%), Immigrants from Thailand (93.9%, a difference of 0.020%), Ghanaian (93.9%, a difference of 0.020%), Immigrants from Jamaica (93.9%, a difference of 0.020%), and Immigrants from Uzbekistan (93.9%, a difference of 0.020%).

Demographics	Rating \| Rank	9th Grade
U.S. Virgin Islanders	0.7 /100 \| #254	Tragic 94.0%
Immigrants \| Nigeria	0.6 /100 \| #255	Tragic 94.0%
Immigrants \| Afghanistan	0.5 /100 \| #256	Tragic 94.0%
Immigrants \| Costa Rica	0.5 /100 \| #257	Tragic 94.0%
Immigrants \| Thailand	0.5 /100 \| #258	Tragic 93.9%
Ghanaians	0.5 /100 \| #259	Tragic 93.9%
Pima	0.4 /100 \| #260	Tragic 93.9%
South Americans	0.4 /100 \| #261	Tragic 93.9%
Immigrants \| Jamaica	0.4 /100 \| #262	Tragic 93.9%
Immigrants \| Uzbekistan	0.4 /100 \| #263	Tragic 93.9%
Immigrants \| Congo	0.4 /100 \| #264	Tragic 93.9%
Natives/Alaskans	0.4 /100 \| #265	Tragic 93.9%
Navajo	0.3 /100 \| #266	Tragic 93.9%
Armenians	0.3 /100 \| #267	Tragic 93.9%
Immigrants \| Bolivia	0.3 /100 \| #268	Tragic 93.9%