Merge pull request #606 from tink2123/book01

modified 01.fit_a_line

01.fit_a_line/README.md

@@ -63,7 +63,7 @@ The UCI housing dataset has 506 instances. Each instance describes the attribute
 | AGE | proportion of owner-occupied units built prior to 1940 | Continuous |
 | DIS | weighted distances to five Boston employment centres | Continuous |
 | RAD | index of accessibility to radial highways | Continuous |
-| TAX | full-value property-tax rate per $10,000 | Continuous |
+| TAX | full-value property-tax rate per \$10,000 | Continuous |
 | PTRATIO | pupil-teacher ratio by town | Continuous |
 | B | 1000(Bk - 0.63)^2 where Bk is the proportion of blacks by town | Continuous |
 | LSTAT | % lower status of the population | Continuous |

01.fit_a_line/index.html

@@ -105,7 +105,7 @@ The UCI housing dataset has 506 instances. Each instance describes the attribute
 | AGE | proportion of owner-occupied units built prior to 1940 | Continuous |
 | DIS | weighted distances to five Boston employment centres | Continuous |
 | RAD | index of accessibility to radial highways | Continuous |
-| TAX | full-value property-tax rate per $10,000 | Continuous |
+| TAX | full-value property-tax rate per \$10,000 | Continuous |
 | PTRATIO | pupil-teacher ratio by town | Continuous |
 | B | 1000(Bk - 0.63)^2 where Bk is the proportion of blacks by town | Continuous |
 | LSTAT | % lower status of the population | Continuous |