Question: Represent the data by a stem-and-leaf plot, a histogram, and a boxplot: Efficiency [%] of seven Voith Francis turbines of runner diameter 2.3 m under

Represent the data by a stem-and-leaf plot, a histogram, and a boxplot:

Efficiency [%] of seven Voith Francis turbines of runner diameter 2.3 m under a head range of 185 m

91.8    89.1    89.9    92.5    90.7    91.2    91.0

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