A house on the market was valued at $278,000. After several years, the value decreased by 9% By how much did the house's value d
2 answers:
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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 .