Answer:
145
Step-by-step explanation:
Divide 48 by 7 = 6≅. then add 6 to 139. 145
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
.
D = 101/4
if you need it in decimal form it is 25.25
if you need it in mixed number form it is 25 1/4
<span>2.31*10-^3 using scientific notation
= 0.00231</span>