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Please help! There is something about all three graphs that tells us that there are no "dead" batteries, or batteries that last for very few hours and then quit. What is it?

1. The range of the lowest quartile is very small. There are no extreme outliers in the lowest quartile.
2. The second and third quartiles don't have the same range for any particular brand.
3. The large range in the upper quartile.
4. The median for each brand is over 50 hours.

Question

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Please help! There is something about all three graphs that tells us that there are no "dead" batteries, or batteries that last for very few hours and then quit. What is it?

1. The range of the lowest quartile is very small. There are no extreme outliers in the lowest quartile.
2. The second and third quartiles don't have the same range for any particular brand.
3. The large range in the upper quartile.
4. The median for each brand is over 50 hours.

anonymous · Answer

attachment

mathsolver · Answer

no battery has a life of less than 25 hours so you could conclude that none are dead.

anonymous · Answer

Yes but how/why. I need to choose one out of the four answers given.

mathsolver · Answer

its definately not 2 or 3, but i would say its because there are no values under 25

anonymous · Answer

So number 1 or 4? You left that part out of the sentence :/

mathsolver · Answer

awnser 4 suffices criteria 2, batteries last for a short time and then quit, so i would go with that