`R/BSDA-package.R`

`Laminect.Rd`

Data for Exercise 10.18

`Laminect`

A data frame/tibble with 138 observations on two variables

- area
a character vector indicating the area of the hospital with

`Rural`

,`Regional`

, and`Metropol`

- cost
a numeric vector indicating cost of a laminectomy

*Consumer's Guide to Hospitalization Charges in North Carolina Hospitals* (August 1994),
North Carolina Medical Database Commission, Department of Insurance.

Kitchens, L. J. (2003) *Basic Statistics and Data Analysis*.
Pacific Grove, CA: Brooks/Cole, a division of Thomson Learning.

```
boxplot(cost ~ area, data = Laminect, col = topo.colors(3))
anova(lm(cost ~ area, data = Laminect))
#> Analysis of Variance Table
#>
#> Response: cost
#> Df Sum Sq Mean Sq F value Pr(>F)
#> area 2 12838182 6419091 1.6658 0.201
#> Residuals 43 165698288 3853449
```