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Using Data Displays to Make Comparisons and Draw Conclusions

Stat-prob

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Four Russian history professors are always competing with each other. They decide to give all their students a standardized test and plot the results.

Which teacher's students had the largest standard deviation of test scores?

Created with Highcharts 3.0.2Score (out of 100)Number of studentsMr. Wynand0-1010-2020-3030-4040-5050-6060-7070-8080-9090-10002550
Created with Highcharts 3.0.2Score (out of 100)Number of studentsMs. Francon0-1010-2020-3030-4040-5050-6060-7070-8080-9090-1000255075100
Created with Highcharts 3.0.2Score (out of 100)Number of studentsMs. Rand0-1010-2020-3030-4040-5050-6060-7070-8080-9090-1000255075100
Created with Highcharts 3.0.2Score (out of 100)Number of studentsMr. Roark0-1010-2020-3030-4040-5050-6060-7070-8080-9090-10002550
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