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T3_Visual_Displays_of_Data_Upload.pptx
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T3 Visual Displays of Data Upload.pptxStatistics...
T3_Visual_Displays_of_Data_Upload.pptxStatistics Through Example STA 1013 Lexi
T3 Visual Displays of Data Upload....
T3_Visual_Displays_of_Data_Upload.pptxStatistics Through Example STA 1013 Lexi
Page 22
Histogram
1.
Make a
.
chart
2.
Draw and label x and y axis.
○
X axis : create number ranges
○
Y axis : frequency or percent
3.
Draw the bars
Page 24
Special Case  Graph
ID
Age Interval
1
2025
2
2025
3
2630
4
2630
5
3035
ID
Age
1
22
2
23
3
28
4
27
5
33
Page 25
Data Patterns
Page 26
Data
Patterns
Visual Display of
Data Distribution
Analyze the shape of a graph:
● Spread
● Shape
○ Symmetry
○ Skew
○ Peak
Page 27
Distribution
Describing Data
The distribution of a statistical
data set refers to the all of the
possible values of the data and
how often they occur.
We can summarize a
distribution visually with a
table or a graph.
Page 28
Spread
The spread of a distribution
refers to the
.
of the data.
Page 29
Symmetry
Shape
A symmetric distribution can
be divided at the
.
so that each half is a
mirror image of the other.
Page 30
Skew
Shape
When data is displayed
graphically, some distributions
have many more observations
on
.
of the graph than the other.
Page 31
Skew
Page 32
Peak
Shape
A high
.
of data values.
When a symmetric distribution
has a
single
peak at the
.
, it is referred to as
.
Page 33
Peak
Page 34
Practice
Page 35
Practice
What type of chart/ﬁgure would best ﬁt
this data?
A.Bar Chart
B.Pie Chart
C.Histogram
D.Stem & Leaf Plot
Soft
Drink
#
Students
Pepsi
92
CocaCola
78
Dr.
Pepper
48
7Up
42
Other
40
Page 36
Practice
What type of chart/ﬁgure would best ﬁt
this data?
Note: We’re not interested in
the individual values.
A.Bar Chart
B.Pie Chart
C.Histogram
D.Stem & Leaf Plot
Weights of 30 Students
143
151
136
127
132
132
126
138
119
104
113
90
126
123
133
104
99
112
129
107
139
122
137
112
140
134
133
123
121
121
Page 37
Practice
1.Make a stem and leaf plot of the
scores given.
2. What was the lowest score?
3. What score occurred the most?
Test Scores
56
65
98
82
64
71
78
77
86
95
91
59
69
70
80
92
76
82
85
91
92
99
73
82
63
Page 38
Practice
To develop a reading support strategy, a teacher analyzed the reading
ages of the pupils in a primary school. The pie chart shows the reading
ages of 310 pupils at a primary school.
What percentage of the pupils had a reading age
below
their actual
age? Give answer to the nearest whole number.
Page 39
Practice
1.What’s the diﬀerence between a histogram and a relative frequency
histogram?
2.In what ways are histograms similar to stem & leaf charts?
3.When data is displayed graphically, if many more observations lie to
the right, what is the type of skew you’d expect to see?
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