The following graph illustrates an association between two variables. It shows percent changes in the range sizes of different species of native butterflies (red), birds (blue), and plants (black) of Britain over the past two to four decades (data from Thomas et al. 2004). Identify 

(a) The type of graph,

(b) The explanatory and response variables, and 

(c) The type of data (whether numerical or categorical) for each variable.

Transcribed Image Text:

Cumulative relative frequency 1.0 0.9 0.8 0.7 0.6 0.5- 0.4 0.3 - 0.2 0.1 0 - 100 P -50 50 100 Percent change in range 0 150