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Stem and Leaf question, stats

  1. Jan 23, 2008 #1
    Hi everyone, I just started stats and had a question.

    Question:
    The accompanying specific gravity values for various wood types used in construction appeared in the article "Bolted Connection Design values based on Eurpoean yeidl Model"
    .31 .35 .36 .36 .37 .38 .40 .40 .40
    .41 .41 .42 .42 .42 .42 .42 .43 .44
    .45 .46 .46 .47 .48 .48 .48 .51 .54
    .55 .55 .58 .62 .66 .66 .67 .68 .75

    Construct a stem-and-leaf display using repeated stems and comment on any interesting features of the display.


    An example of repeated stems are like:
    For example, if evertyhing is in the 60's, 70's, 80's or 90's, we could use 6L for lower 60's. Like (leaves 0,1,2,3) and 6H for high 60's with leaves (5,6,7,8,9).

    So for my problem above would it look somthing like this?
    I have:
    .30's, .40's, .50's, .60's, and a .75

    So would I have for the .30 a High and a Low the low being (0, 1, 2, 3 , 4) and 3H (.30 HIGH) being (5,6,7,8,9).

    so would it be something like this?
    3L|1
    3H|56678
    4L|000112222234
    4H|5667888
    5L|144
    5H|58
    6L|2
    6H|6678
    7H|5

    Then It wants me to label the Stem and Leaf.

    For example if it was whole numbers like 60,70,80,88,etc
    Stem would be the tens
    Leaf would be the ones.

    So because these are all like .30, .40,.50
    Would the stem unit be tenths, and leaf: hundredths?

    Also would the trend I'm seeing is that there a lot of low 40's but few high 70's?

    Thanks!
     
    Last edited: Jan 23, 2008
  2. jcsd
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