Am I correct here? Stem and Leaf plot?

Question

anonymous · Answer

Question: If you used the stem-and-leaf plot to build a histogram, which of the following intervals would have the longest bar? 

Answers:

1. 0 - 9
2. 10 - 19
3. 20 - 29
4. 30 - 39

anonymous · Answer

I would think the number 59 would create the highest bar but that is not an option. So if 59 isn't the highest, I would assume for some reason then it would be what is literally the longest, 20 - 29

debbieg · Answer

I'm not sure what you mean, "what is literally the longest", but remember what is shown on a histogram:

The "classes" (meaning the limits of what range of the data values are included in each "group")
vs.
the frequency of the data values that fall into that group.

In other words, the "longest bar" will occur for the range of data values that contain the MOST data - the class with the MOST data values in it. It has nothing to do with the actual MAGNITUDE of the data values.

In this case, because the histogram class limits are in "10's", they match up exactly with the stem and leaf plot. That is, the longest bar on the histogram will go with the class for which the stem and leaf plot has the MOST LEAVES.

debbieg · Answer

So your answer, 20-29 is correct.... just making sure you understand why. :)

anonymous · Answer

that's what i was thinking but I wasn't sure. thank you very much

debbieg · Answer

you're welcome. :)