* do-file for Supplementary Exercise 10.12 of IPS7e
version 13 /* works also with version 14 */

import delimited "H:\VHM\VHM801\Datasets\csv\Chapter 10\ex10_012.csv"
twoway (scatter gasconsumption degreedays) (lfit gasconsumption degreedays)
regress gasconsumption degreedays, level(90)