Step-by-step explanation:
The given table from the given data:
Class: 12 - 15 15 - 18 18 - 21 21 - 24 24 - 27
Frequency: 3 6 3 4 4
To find, the total number of observations in the frequency distribution is __________ .
Class: 12 - 15 15 - 18 18 - 21 21 - 24 24 - 27
Frequency: 3 6 3 4 4
Cumuative
frequency (CF): 3 9 12 16 16
The total number of observations in the frequency distribution = 20