Welsh vs South American 8th Grade
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Welsh
South American
8th Grade
8th Grade Comparison
Welsh
South Americans
97.2%
8TH GRADE
100.0/ 100
METRIC RATING
22nd/ 347
METRIC RANK
94.9%
8TH GRADE
0.4/ 100
METRIC RATING
264th/ 347
METRIC RANK
Welsh vs South American 8th Grade Correlation Chart
The statistical analysis conducted on geographies consisting of 528,593,877 people shows a substantial positive correlation between the proportion of Welsh and percentage of population with at least 8th grade education in the United States with a correlation coefficient (R) of 0.560 and weighted average of 97.2%. 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 8th grade education in the United States with a correlation coefficient (R) of 0.157 and weighted average of 94.9%, a difference of 2.4%.

8th Grade Correlation Summary
| Measurement | Welsh | South American |
| Minimum | 94.1% | 85.8% |
| Maximum | 100.0% | 100.0% |
| Range | 5.9% | 14.2% |
| Mean | 99.2% | 94.7% |
| Median | 100.0% | 95.0% |
| Interquartile 25% (IQ1) | 98.4% | 93.3% |
| Interquartile 75% (IQ3) | 100.0% | 96.1% |
| Interquartile Range (IQR) | 1.6% | 2.8% |
| Standard Deviation (Sample) | 1.1% | 3.0% |
| Standard Deviation (Population) | 1.1% | 3.0% |
Similar Demographics by 8th Grade
Demographics Similar to Welsh by 8th Grade
In terms of 8th grade, the demographic groups most similar to Welsh are French Canadian (97.2%, a difference of 0.010%), Scandinavian (97.2%, a difference of 0.010%), Czech (97.1%, a difference of 0.020%), Danish (97.2%, a difference of 0.030%), and French (97.1%, a difference of 0.030%).
| Demographics | Rating | Rank | 8th Grade |
| Pennsylvania Germans | 100.0 /100 | #15 | Exceptional 97.3% |
| Tlingit-Haida | 100.0 /100 | #16 | Exceptional 97.3% |
| Irish | 100.0 /100 | #17 | Exceptional 97.3% |
| Lithuanians | 100.0 /100 | #18 | Exceptional 97.3% |
| Scottish | 100.0 /100 | #19 | Exceptional 97.3% |
| Croatians | 100.0 /100 | #20 | Exceptional 97.2% |
| Danes | 100.0 /100 | #21 | Exceptional 97.2% |
| Welsh | 100.0 /100 | #22 | Exceptional 97.2% |
| French Canadians | 100.0 /100 | #23 | Exceptional 97.2% |
| Scandinavians | 100.0 /100 | #24 | Exceptional 97.2% |
| Czechs | 100.0 /100 | #25 | Exceptional 97.1% |
| French | 100.0 /100 | #26 | Exceptional 97.1% |
| Scotch-Irish | 100.0 /100 | #27 | Exceptional 97.1% |
| Italians | 100.0 /100 | #28 | Exceptional 97.1% |
| Europeans | 100.0 /100 | #29 | Exceptional 97.1% |
Demographics Similar to South Americans by 8th Grade
In terms of 8th grade, the demographic groups most similar to South Americans are Immigrants from Hong Kong (94.9%, a difference of 0.0%), Yuman (94.9%, a difference of 0.0%), Immigrants from Nigeria (94.9%, a difference of 0.010%), Immigrants from Costa Rica (94.9%, a difference of 0.030%), and West Indian (94.8%, a difference of 0.050%).
| Demographics | Rating | Rank | 8th Grade |
| Afghans | 0.6 /100 | #257 | Tragic 94.9% |
| Immigrants | Congo | 0.6 /100 | #258 | Tragic 94.9% |
| Ghanaians | 0.6 /100 | #259 | Tragic 94.9% |
| Immigrants | Jamaica | 0.6 /100 | #260 | Tragic 94.9% |
| Immigrants | Costa Rica | 0.5 /100 | #261 | Tragic 94.9% |
| Immigrants | Nigeria | 0.4 /100 | #262 | Tragic 94.9% |
| Immigrants | Hong Kong | 0.4 /100 | #263 | Tragic 94.9% |
| South Americans | 0.4 /100 | #264 | Tragic 94.9% |
| Yuman | 0.4 /100 | #265 | Tragic 94.9% |
| West Indians | 0.3 /100 | #266 | Tragic 94.8% |
| Immigrants | Ghana | 0.3 /100 | #267 | Tragic 94.8% |
| Immigrants | Uruguay | 0.3 /100 | #268 | Tragic 94.8% |
| Immigrants | Thailand | 0.2 /100 | #269 | Tragic 94.8% |
| Immigrants | Uzbekistan | 0.2 /100 | #270 | Tragic 94.8% |
| Immigrants | Afghanistan | 0.2 /100 | #271 | Tragic 94.8% |