Distribution Notes
Descriptive statistics =
Example of a Frequency Table
X
2
3
4
5
6
7
8
9
10
11
12
f
4
0
11
39
41
56
42
28
13
4
2
p
1.7
0.0
4.6
16.3
17.1
23.3
17.5
11.7
5.4
1.7
0.8
cf
4
4
15
54
95
151
193
221
234
238
240
cp
1.7
1.7
6.3
22.5
39.6
62.9
80.4
92.1
97.5
99.2
100.0
X = Values of the variable
f = frequency of value X
p = percentage of value X
cf = Cumulative frequency of value X
cp = Cumulative percentage of value X
Example of a Stem and Leaf Plot
Data: 67, 90, 92, 58, 76, 75, 84, 92, 78, 93, 89, 74, 62, 98, 75, 73, 75, 89, 89, 76, 65, 49
Plot
4.9
5.8
6.257
7.34555668
8.4999
9.2238
Example of a Histogram
20
16
12
8
4
0
50.0
60.0
55.0
70.0
65.0
EXAM2
Example of a Bar Chart
Example of a Pie Chart
80.0
75.0
90.0
85.0
100.0
95.0
Cutting
Doe
Missing
Smith
Skew
Positive skew
Negative skew
Mode
Unimodal
Bimodal
Minor Mode
Major Mode