Welsh vs American 4th Grade
COMPARE
Welsh
 American
 4th Grade
4th Grade Comparison
Welsh
Americans
98.7%
4TH GRADE
100.0/ 100
METRIC RATING
2nd/ 347
METRIC RANK
98.1%
4TH GRADE
99.8/ 100
METRIC RATING
59th/ 347
METRIC RANK
Welsh vs American 4th Grade Correlation Chart
The statistical analysis conducted on geographies consisting of 239,959,962 people shows a significant positive correlation between the proportion of Welsh and percentage of population with at least 4th grade education in the United States with a correlation coefficient (R) of 0.654 and weighted average of 98.7%. Similarly, the statistical analysis conducted on geographies consisting of 581,990,776 people shows a moderate positive correlation between the proportion of Americans and percentage of population with at least 4th grade education in the United States with a correlation coefficient (R) of 0.484 and weighted average of 98.1%, a difference of 0.63%.
 
4th Grade Correlation Summary
| Measurement | Welsh | American | 
| Minimum | 98.5% | 95.1% | 
| Maximum | 100.0% | 100.0% | 
| Range | 1.5% | 4.9% | 
| Mean | 99.6% | 98.6% | 
| Median | 100.0% | 98.5% | 
| Interquartile 25% (IQ1) | 99.1% | 98.2% | 
| Interquartile 75% (IQ3) | 100.0% | 99.4% | 
| Interquartile Range (IQR) | 0.89% | 1.3% | 
| Standard Deviation (Sample) | 0.49% | 1.1% | 
| Standard Deviation (Population) | 0.49% | 1.1% | 
Similar Demographics by 4th Grade
Demographics Similar to Welsh by 4th Grade
In terms of 4th grade, the demographic groups most similar to Welsh are Tsimshian (98.6%, a difference of 0.060%), Inupiat (98.6%, a difference of 0.12%), Yup'ik (98.5%, a difference of 0.15%), Norwegian (98.5%, a difference of 0.19%), and Slovak (98.5%, a difference of 0.20%).
| Demographics | Rating | Rank | 4th Grade | 
| Crow | 100.0 /100 | #1 | Exceptional 99.6% | 
| Welsh | 100.0 /100 | #2 | Exceptional 98.7% | 
| Tsimshian | 100.0 /100 | #3 | Exceptional 98.6% | 
| Inupiat | 100.0 /100 | #4 | Exceptional 98.6% | 
| Yup'ik | 100.0 /100 | #5 | Exceptional 98.5% | 
| Norwegians | 100.0 /100 | #6 | Exceptional 98.5% | 
| Slovaks | 100.0 /100 | #7 | Exceptional 98.5% | 
| Germans | 100.0 /100 | #8 | Exceptional 98.5% | 
| Slovenes | 100.0 /100 | #9 | Exceptional 98.4% | 
| Alaskan Athabascans | 100.0 /100 | #10 | Exceptional 98.4% | 
| English | 100.0 /100 | #11 | Exceptional 98.4% | 
| Tlingit-Haida | 100.0 /100 | #12 | Exceptional 98.4% | 
| Swedes | 100.0 /100 | #13 | Exceptional 98.4% | 
| Carpatho Rusyns | 100.0 /100 | #14 | Exceptional 98.4% | 
| Dutch | 100.0 /100 | #15 | Exceptional 98.4% | 
Demographics Similar to Americans by 4th Grade
In terms of 4th grade, the demographic groups most similar to Americans are Maltese (98.1%, a difference of 0.010%), White/Caucasian (98.1%, a difference of 0.010%), Greek (98.1%, a difference of 0.010%), Austrian (98.1%, a difference of 0.010%), and Creek (98.1%, a difference of 0.010%).
| Demographics | Rating | Rank | 4th Grade | 
| Australians | 99.8 /100 | #52 | Exceptional 98.1% | 
| Slavs | 99.8 /100 | #53 | Exceptional 98.1% | 
| Maltese | 99.8 /100 | #54 | Exceptional 98.1% | 
| Whites/Caucasians | 99.8 /100 | #55 | Exceptional 98.1% | 
| Greeks | 99.8 /100 | #56 | Exceptional 98.1% | 
| Austrians | 99.8 /100 | #57 | Exceptional 98.1% | 
| Creek | 99.8 /100 | #58 | Exceptional 98.1% | 
| Americans | 99.8 /100 | #59 | Exceptional 98.1% | 
| Immigrants | Canada | 99.7 /100 | #60 | Exceptional 98.1% | 
| Immigrants | North America | 99.7 /100 | #61 | Exceptional 98.1% | 
| Serbians | 99.7 /100 | #62 | Exceptional 98.1% | 
| Russians | 99.7 /100 | #63 | Exceptional 98.0% | 
| Cajuns | 99.7 /100 | #64 | Exceptional 98.0% | 
| Immigrants | Northern Europe | 99.6 /100 | #65 | Exceptional 98.0% | 
| Canadians | 99.6 /100 | #66 | Exceptional 98.0% |