• study of rare plants that grow on the limestone cliffs of the Northern Swiss Jura mountains. Data on
  altitude above sca level (meters), plant population size (number of plants growing), and molecular
  variance (i.e., the variance in molecular weight of the plants) for a sample of 12 limestone cliffs are reproduced
  in the table. Recall that the researchers are interested in whether either altitude or population size is related to
  molecular variance.
  Population
  Size
  Molecular
  Variance
  Ciff Number
  Alitude
  147
  209
  468
  59,8
  589
  24.4
  700
  28
  42.2
  59.5
  65.
  17.7
  12.5
  27.6
  35.9
  13.3
  3.6
  3.2
  664
  177
  876
  248
  909
  1032
  952
  832
  1099
  982
  1053
  114
  217
  10
  15
  a. Use simple linear regression to investigate the relationship between molecular variance (y) and altitude
  (x). Find and interpret the value of r2
  b. Use simple linear regression to investigate the relationship between molecular variance (y) and population
  size (x). Find and interpret the value of r2.
  c. What are your recommendations to the researchers?