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Item EM001006: Ear length varies within a population of rabbits. (Recognize a statement that describes the variability shown in a bar graph.)

The graph below shows the ear lengths of a population of rabbits.

Which of the following claims about the population do the data in this graph support?

  1. Ear length is changing over time in the population.
  2. Ear length is undergoing natural selection in the population.
  3. Ear length is the same throughout the population.
  4. Ear length varies among individuals in the population.
Distribution of Responses
Chart showing distrubtion of responses for Item 001006
Points Earned
Group Correct Total Percent
Overall 328 572 57%
Grades
  6–8 14 18 78%
  9–12 286 502 57%
Gender
  Male14524559%
  Female16028357%
Primary Language
  English29351157%
  Other101856%

View data table

Distribution of Responses
Chart showing distrubtion of responses for Item 001006
Points Earned
Group Correct Total Percent
Overall 143 274 52%
Grades
  6–8 6 14 43%
  9–12 125 230 54%
Gender
  Male6011950%
  Female6913053%
Primary Language
  English12723754%
  Other3933%

View data table

Distribution of Responses
Chart showing distrubtion of responses for Item 001006
Points Earned
Group Correct Total Percent
Overall 185 278 67%
Grades
  6–8 3 4 75%
  9–12 166 248 67%
Gender
  Male8913068%
  Female8713166%
Primary Language
  English16825167%
  Other3560%

View data table