Question

To graduate, Qyrisha needs at least a B in Statistics. She did not do very well on her first three tests. However, she did well in the last four. Below are her scores:

57 60 84 90 92 95

Compute the mean
Determine whether Qyrisha’s grade will be a B (70 to 79 average) or a C (60 to 69 average)

Answer 1

Compute mean: (a₁+a₂+...+a_n)/n=(57+60+84+90+92+95)/6=79.67. Therefore Qyrisha’s grade will be a B.