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a stem-and-leaf plot has several purposes including: 1) display large group of numbers 2) demonstrate the distribution of a sample of numbers
okay... yah. and so i know like what it is sort of and how you write it and stuff. but what i don't get is that so for example you have this data: 17,7 13,3 14,5 17,2 and soooo forth. what do those numbers mean.. an example? thanks !
Given the numbers: 14, 15, 16, 24, 24, 24, 24, 26, 33, 36, 37, 31, 62 the stem-and-leaf plot would look like |dw:1327153341118:dw|
yes, i get that. but cool diagram! so could that plot be like the points out of 70 on a test, or something?
The numbers on the left side represent the first digit tens, twenty's, thirty's, forty's .... .and so on the numbers on the right side represent the second digits like "4" in fourteen and "2" in sixty-two
i get that... however in my book they write 17, 7 and 13,3 or 14,5 and 17,2....what does that mean?
Notice that in my stem-and-leaf plot that I did not have to write as many digits as I did when I listed the numbers in my second post; thus, a stem-and-leaf plot saves space. Secondly, it shows the distribution, notice that 62 is much BIGGER than all the other numbers. 62 is an outlier.
My plot could be for a test, but this would mean that most students failed. A better example, maybe this refers to students in a college class. We have some young fourteen year olds in the class, but we also have one senior citizen.
okay. yah probably better example. but could you answer the question i asked: in my book they write 17, 7 and 13,3 or 14,5 and 17,2....what does that mean?
I might need to see a picture of 17, 7 and 13,3 or 14,5 and 17,2 I am guessing that 17,7 means 177 13,3 means 133 14, 5 means 145 17,2 means 172 |dw:1327153718794:dw|
just a min.
a thing to note about the stem and leaf.... if you look at it the right way it resembles the shape of the histogram
okay, so in my book, (for the seventeens) there is 17,7 17,2 and 17,0.
and this is what the plot looks like
the arrows just mean other numbers
Nice, these numbers in the plot represent 132, 133, 170, 172 and 177 Please note that this stem plot also needs to have 14, 15 and 16 on the left-side, you might have left it out for the ease of having to draw all of it. 14, 15, and 16 need to be included to create the histogram that agdg mentioned ...
excellent job with the arrows! :)
okay. and the arrows were a masterpiece. i totally agree. however, lets say there is nothing with fourteen. you couldn't write a 0, cause that would be 140. right? would you just leave it blank?
correct, for example |dw:1327154327839:dw|
wait.. but if just the 14 were blank it would be....
and... on the stem and leaf plot do the numbers on the left go in numerical order?
on the left, yes on the right, depends on the teacher, technically yes
okay, tthanks soooo much!!!!!
okay, i will...i hope! haha bye, thanks!