MathematicsMediumHigh School (11–12)Statistics and Probability › StatisticsAPA-LevelIBAEEE (Amrita)AMUEEEAP EAPCET
Created by StemPy LabThe numbers of emails received by an office on five days were and . What is the mean deviation about the mean?
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← The histogram shows the time, in minutes, that 40 customers waited at a counter. The classes are 0 to 5, 5 to 10, 10 to 15, 15 to 20 and 20 to 25. In which class does the median waiting time lie?A student finds the standard deviation of the numbers 1, 3, 5. The mean is 3, the squared deviations are 4, 0, 4, their sum is 8, and she divides by 3 to get 8/3. She writes that the standard deviation is 8/3. Where is her mistake? →
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