The ---------------- deviation is computed by taking the sum of the absolute value of the deviations of the values in the distribution from the mean of the distribution and dividing the sum by number of value in the distribution

Surveys, interview, observation, questionnaire and experiments are the various methods of collecting ------------------ data

------------------- is a list of questions drawn on the study which information is required

A major disadvantage of the ---------------- is the fact that it does not allow the views of the respondents, which may enhance the quality of the information collected

Variable is a characteristic that assumes different ------- for different entities.

Probability is defined as a value between -----------that shows the likelihood of occurrence of an events

The weights of pupils in the primary school constitute a ----------------

Heights of forty-five students of the National Open University of Nigeria forms a set of ------------variables

The largest number of entities in a study is called --------

Entity may be person, place, and things on which we make -----------