A Teacher Grading Statistics Homeworks Finds That None of the Students

Multiple Choice

A teacher grading statistics homeworks finds that none of the students has made more than three errors.14% have made three errors,25% have made two errors,and 39% have made one error.Find the standard deviation of the number of errors in students' statistics homeworks.

A) 0.97
B) 0.93
C) 0.89
D) 1.07
E) 0.82