On an intelligence test, Group 1 has a mean score of 96 with a standard deviation of 13. Group 2 has a mean score of 105 with a standard deviation of 8. On this test, _______ scores were higher on average and _______ spread out than _______ scores.
A) Group 1; more; Group 2
B) Group 1; less; Group 2
C) Group 2; more; Group 1
D) Group 2; less; Group 1

Question

Quizplus · Accepted Answer

Group 2 has a higher mean score (105 vs. 96), indicating higher average scores. Group 2 also has a lower standard deviation (8 vs. 13), indicating scores are less spread out compared to Group 1.

On an Intelligence Test, Group 1 Has a Mean Score