Bar graphs as shown below represent the number of runs scored by two batsmen in 5 matches. Difference between the averages is

9.8

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8.8

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7.8

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10.8

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Solution

The correct option is B 8.8
The better result is the one with a higher average.

Average for the Batsman 1 = $\frac{Sum of all the observations}{Number of observations}$ = $\frac{103 + 49 + 18 + 67 + 33}{5}$ = $54$

Average for the Batsman 2 = $\frac{Sum of all the observations}{Number of observations}$ = $\frac{45 + 51 + 110 + 85 + 23}{5}$ = $62.8$
Diffenrence $= 62.8 - 54 = 8.8$

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