Forty 2009 Prius vehicles were randomly sampled as well as their mileage ratings were recorded. The data are showed in the table below.
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43
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43
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44
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44
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44
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45
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45
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45
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45
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45
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45
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46
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46
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46
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46
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46
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46
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46
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46
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46
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47
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47
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47
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47
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47
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47
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47
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47
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48
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48
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48
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48
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48
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49
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49
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49
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49
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50
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50
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51
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Compute the standard deviation of the data set?