Question 5-7: This is a really long, hard problem if done by hand. So, I already plotted the data for you to make your life easier :). Be sure you understand HOW I plotted this data: be sure you can interpret the graph. (You will be required at times to plot your own data, like for example on a written portion of an exam. So please be sure you understand how to graph).
| 0 | 4 |
| 0 | 66777888 |
| 1 | 11233 |
| 1 | 78999 |
| 2 | 012334 |
| 2 | 578899 |
| 3 | 0001 |
| 3 | 88 |
| 4 | |
| 4 | |
| 5 | |
| 5 | 7 |
See how I "split the stems" as it asked? This allows one line in a chart not to be super long. Splitting means having two "stems" (like double 2's or double 1's as shown above). Realize that my scale is 1|7 = 1700. I also rounded to the nearest hundred like asked.
Use this to find the rest of the answers. I understand it may be difficult to say the exact shape "is it only "slightly" or "totally" skewed?) But the medians are different, so you should be able to determine the answer. (You may ask the quesiton: if you rounded, how am I to know the actual median? Let's say the median fell on a 2|8 (this is incorrect). If it was the first 2|8, I would use the number "2828" because it is the lower of the 2800 numbers. Hope that makes sense).
Hope that helps :)
-Hillary
Hey just so you know. You left out 5 numbers which makes the median completely different. People should probably know that because it made me get the question wrong, but thanks for making it!
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ReplyDeleteI figured out what happened. I did the plot in excel, so it deleted all my "0's" at the beginning of my charts, thinking they were extraneous numbers. Sorry about that! Email me if this happened to you. It's fixed now.
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