Write down 20 random numbers
between 1-100.
Find the Mean, Median, and
Mode of your data set you just
wrote down.
It’s all about reppin’ your data
Goal
 To compare data sets using three
different types of graphs.
Directions
 Each group will be given a data set (list
of numbers)
 The data set will represent something
from life.
 Bar graph
 Scatter Plot
 Box-whisker
Directions
 Each graph will have…
 The necessary parts labeled correctly
 The mean, median and mode pointed out
Posters:
• Will be organized
• Have decorations that match the theme of
the data set
Directions
 Presenting the posters:
 Two days from today
 Each person must participate
 Each graph must be explained
 Explain how each graphs shows the mean,
median and mode of the data set
Sample: Mean
 6, 17, 24, 35, 3, 5, 36, 42, 13, 6
 The mean you know how to find. Add up
and divide by the quantity of the data set.
 6+17+24+35+3+5+36+42+13+6 = 18.7
10
Median
 3, 5, 6, 6, 13, 17, 24, 35, 36, 42
 Median – What is the middle number
 The middle is “13 , 17” …what now?
 If it is two numbers you add and divide by
two. = 15
Mode
 3, 5, 6, 6, 13, 17, 24, 35, 36, 42
 The data that occurs the most frequently
 What is this one?
 Mode = 6
Box and Whisker
 Box and Whisker
 5 things you need to find to make a box
and whisker
 Median “Q2”
 Median of lower half of data “Q1”
 Median of upper half of data “Q3”
 Lowest number in data
 Highest number in data
Lower half
median
Lowest
Highest
Q1
Median
Q2
Upper half
median
Q3
Bar graph
Burps per Day
 Leave the
numbers in the
order you were
given them!!!!
 Do not
rearrange
them least to
greatest.
45
#
40
35
o
30
f
25
B 20
u 15
r 10
p 5
s 0
1
2
3
4 5 6 7 8
Person Surveyed
9
10
Scatter Plot
 Leave the
numbers in
the order you
were given
them!!!!
 Do not
rearrange
them least to
greatest.
45
# 40
35
o
f 30
25
B 20
u 15
r 10
p
5
s
0
0
1
2
3 4 5 6 7
Person Surveyed
8
9
10
Breaking up into Groups
 I will assign the groups
 No you cannot change groups.
 Your job
 Make a poster showing your data with 3
different graphs, all labeled correctly
 Two days from today you will present your
posters to the class