Question: On a statistics examination, an instructor finds that SD = l4.0 for a sample of undergraduate test scores and SD = 7.0 for a sample

On a statistics examination, an instructor finds that SD = l4.0 for a sample of undergraduate test scores and SD = 7.0 for a sample of graduate test scores. Both samples have the same number of students. Which of the following statements is warranted? Group of answer choices Undergraduates did better by 7 points. Graduates are more heterogeneous in performance than graduate students. Undergraduates are more homogeneous in performance than graduate students. Undergraduates are more heterogeneous in performance than graduate students

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