问题
单项选择题
Fifty applicants for a job were given scores from 1 to 5 on their interview performance. Their scores are shown in the table above. What was the average score for the group ？（）
A. 2.79
B. 2.86
C. 2.91
D. 2.99
E. 3.03
答案
参考答案：B
解析：
You can calculate this average score exactly the same way you would calculate a GPA--multiply each of the scores by the number of applicants with that score, add them all up, and divide the sum by 50. 10+48+63+14+8=143;143/50=2.86.