Given:
The frequency distribution table.
To find:
The mean average score on a test.
Solution:
The frequency distribution table is

x a xa
y b yb
z c zc
Sum a+b+c xa+yb+zc
Now, the mean average score on the test is


Therefore, the mean average score on the test is
.
Answer:
14 is 25% of 56
Step-by-step explanation:
Answer:
D
Step-by-step explanation:
1800×6.5%×30=b
b-1800=a
a) $1,710
b) $3,510
Answer:

Step-by-step explanation:
