1. Organizing Test
Scores For
Statistical Analysis
(part 2)
Reference: Measuring and
Evaluating Learning Outcomes in
AL 1 and 2
Carlito D. Garcia Ed D

2. ORGANIZING
SCORE
THROUGH
STEM-AND-LEAF
PLOT

3. ORGANIZING SCORE
THROUGH
STEM-AND-LEAF PLOT
• Stem-and-leaf plot – method of
graphically sorting and arranging
data to reveal its distribution.

4. ORGANIZING SCORE
THROUGH
STEM-AND-LEAF PLOT
In this method of organizing
scores, a numerical score is
separated into two parts, usually,
the first one or two digits and the
other digits. The stem is the first
leading digit of the score while the
trailing digit is the leaf

5. The following procedure
should be observed in
organizing and presenting
test scores in a stem –
and-leaf plot:

6. 1. Split each numerical score
or value into two sets of digit.
The first leading set of digits
is the stem, and the second
or trailing set of digits is the
leaf.

7. 2. List all possible stem
digits from the lowest to
highest.

8. 3. For each screw in the
mass of data, write down the
leaf number on the line
labeled by the appropriate
stem number

9. Let us illustrate how a stem-and-leaf plot
is constructed with the us of the
following periodical results in Biology.
30 74 80 57 32 40 55 59
31 77 82 59 90 51 54 62
33 46 65 49 92 69 66 41
42 50 68 48 57 71 68 59
60 53 49 63 53 44 81 68

10. Following the procedure is listed above,
the stem-and-leaf plot aforementioned
test scores in shown below.
Stem Leaf
3 0 1 2 3
4 0 1 2 4 6 8 9 9
5 0 1 3 3 4 5 7 7 9 9 9
6 0 2 3 5 6 8 8 8 9
7 1 4 7
8 0 1 2
9 0 2

11. Presented by:
Niel Richard C. Lopez
BSED-III Englich
Presented to:
Doc. Ed