Both the upper and the lower class limits are included in the __________.
Exclusive method
Inclusive method
Tabulation
None of these
___________ is the sum of all the frequencies,assigned to all classes,represents the total number of individual observations in the series.
Questionnaire
Raw data
Simple frequency
Cumulative frequency
In ___________ method, the researched gets direct information from the respondent through dialogues and observations.
Schedule
Personal observations
Sampling
Interview
In ___________ method, simple question and their possible answers are written on a plain paper and the respondents have to tick mark the possible answers from the given choices.
Personal observation
The unpublished reports, monographs and documents are yet another source of ___________.
Primary data
Secondary data
The __________ consist of observations on variables.
Survey
Census
______________ is summarized by calculating various numerical indices such as mean, variance and standard deviation.
Information
Distribution
Data
Policy
____________ method is useful in carrying out the survey of a larger area.
Frequency distribution
__________ enables the reader to locate the desired information quickly.
Questionaire
Statistical table
__________ helps in comparing the two or more than two frequency distributions.
Frequency polygon