format
The format is:
mts [1:104, 1:2] 11.5 11.5 11.8 11.9 11.3 ...
- attr(*, "dimnames")=List of 2
..$ : NULL
..$ : chr [1:2] "log.sales" "price"
- attr(*, "tsp")= num [1:3] 1 104 1
- attr(*, "class")= chr [1:2] "mts" "ts"source
www.stat.auckland.ac.nz/~balemi/Assn3.xls