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Statistics Examples
Step-by-Step Examples
Statistics
Frequency Distribution
Find the Cumulative Frequency of the Frequency Table
Class
Frequency
12
−
14
4
15
−
17
5
19
−
21
9
22
−
24
2
Class
Frequency
12
-
14
4
15
-
17
5
19
-
21
9
22
-
24
2
Step 1
The cumulative
frequency
of a
data
class is the number of
data
elements
in that class and all the previous classes.
Class
Frequency
(
f
)
Cumulative
−
Frequency
12
−
14
4
4
15
−
17
5
4
+
5
19
−
21
9
4
+
5
+
9
22
−
24
2
4
+
5
+
9
+
2
Class
Frequency
(
f
)
Cumulative
-
Frequency
12
-
14
4
4
15
-
17
5
4
+
5
19
-
21
9
4
+
5
+
9
22
-
24
2
4
+
5
+
9
+
2
Step 2
Simplify the cumulative
frequency
column.
Class
Frequency
(
f
)
Cumulative
−
Frequency
12
−
14
4
4
15
−
17
5
9
19
−
21
9
18
22
−
24
2
20
Class
Frequency
(
f
)
Cumulative
-
Frequency
12
-
14
4
4
15
-
17
5
9
19
-
21
9
18
22
-
24
2
20
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