Keywords: two sample
The data records the length of rivers in the South Island of New Zealand. The lengths are given in kilometres. The second variable, FlowsInto, indicates whether the river flows into the Pacific Ocean (0) or the Tasman Sea (1). A map of the island's rivers is included here.
Data file (tab-delimited text)
|The New Zealand Yearbook, 1982.|
|Lee, A. (1994) Data Analysis: An introduction based on R. Auckland: Department of Statistics, University of Auckland.|
The position of the Southern Alps near the west coast ensures that the Tasman rivers are shorter on average than the Pacific rivers.