Question : Study the bar graph and answer the question.
In how many years was the number of trees planted in state B more than the average number of trees planted in state A over the years?
Option 1: 1
Option 2: 3
Option 3: 4
Option 4: 2
Correct Answer: 3
Solution :
Use the formula, $\text{Average} = \frac{\text{The sum of all values}}{\text{The total number of the values}}$.
The average number of trees planted in state A over the years $=\frac{70+90+78+92+100}{5}=\frac{430}{5}=86$
There are 3 years in 2015, 2016, and 2018 in which the number of trees planted in state B is more than the average number of trees planted in state A over the years.
Hence, the correct answer is 3.
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