Ms. G & Ms. Safer
You have five minutes to
complete the pre –
assessment. Do your
best!
LEONARDO da VINCI
Painter
Sculptor
Architect
Mathemati
cian
Inventor
scientist
Engineer
Writer
Musician
botanist
da Vinci believed…
The IDEAL
person’s
height was
the same as
the length
of their
arm span
Collect and organize data
from each other to create
box-and-whisker plots to
illustrate how close we
measure up to da Vinci’s
“IDEAL” person.
MATERIALS
For you and your partner:
1 tape measure
1 calculator
2 data table/box-and-
whisker worksheets
DIRECTIONS
1. Measure each other’s arm
span & height in centimeters
2. Record data in data table
3. Calculate each other’s height
to arm span ratios (use calc.)
4. Record this ratio in you tables
RECAP!!!
What is a RATIO????
Describes a numerical
RELATIONSHIP
RATIO
How will we calculate it
for height to arm span?
Height ÷ Arm Span
RATIO:
height
arm span
What does this tell us?
How “IDEAL” your body’s
proportions are according
to da Vinci
DIRECTIONS
1. Measure each other’s arm
span & height in centimeters
2. Record data in data table
3. Calculate each other’s height
to arm span ratios (use calc.)
4. Record this ratio in you tables
Box-and-Whiskers Plot
http://shodor.org/interactivate/activities/
BoxPlot/
What do
BOX-and-WHISKERS plots
show???
SPREAD!
(degree of dispersion)
student
Arm span height
student
Arm span height
1
156
162
13
177
173
2
157
160
14
177
176
3
159
162
15
178
178
4
160
155
16
184
180
5
161
160
17
188
188
6
161
162
18
188
187
7
162
170
19
188
182
8
165
166
20
188
181
9
170
170
21
188
192
10
170
167
22
194
193
11
173
185
23
196
200
184
12
173
176
24
186
How
someone
with
Howdo
doyou
you identify
identify someone
with
an
arm
span?
a above
belowaverage
average
height?
Mean arm span
= 175.5 cm
Mean height =
174.8 cm
What information did we draw from this scatterplot that
is not as clear when analyzing your stem-and-leaf and
box-and-whiskers plots?
CORRELATION
 The amount of positive or negative relationship
existing between two measures.
Line of best fit! A
straight line used as a best approximation of
a summary of all the points in a scatter-plot
Plot your measurements on the scatter plot
http://www.learner.org/courses/learningmath/data/session7/part_a/further.html#a5
Box-and-whiskers?
Scatterplots?
Spread
Correlation
LEONARDO da VINCI
Golden Ratio
You have five minutes to
complete the post –
assessment. Do your
best!