Statistics 1 Marks Each

When an authorised agency or investigator uses the data collected by any other agency or investigator, then such data is called secondary data for the users. For example, if the data of population census used by any agency or investigator for their study, then the data becomes secondary for them.

A set of observations on the numerical variable is called quantitative data. For example, the data on monthly wages of workers of a factory.

A set of observations on the attribute is called qualitative data. For example, the data of education level of workers of a factory.

A set of all the units under study is called a population. For example, in population census all the citizens of the country is population.

It is necessary to verify the data carefully before using secondary data to know that whether data is erroneous or suitable with the purpose of the inquiry.

For secondary data, the publication of International Labour Organisation is International Publication.

In the situation where respondents are literate or illiterate the data is obtained by questionnaire by enumerator.

The long questionnaire discourages the respondent to provide accurate answer.

When the field of inquiry is very wide. then method of questionnaire is quite useful to collect primary data.

In indirect inquiry method the reliability of information depends on the ability, honesty and experience of the enumerators.

When direct source does not exist, they the primary data is obtained by indirect inquiry method.

The direct inquiry method is convenient when the field of inquiry is limited.

In direct inquiry method, an investigator obtains the data by visiting personally the respondant.

Primary data are usually in raw form.

Secondary data are usually in classified and tabulated form.

India's Population Census' is primary data.

Advertisement Expenditure' is a numerical haracteristic.

Data is the set of all results of an inquiry.

W. F. Willcox had listed the definitions of statistics.

The fields where Fisher used statistics are genetics, biometry, psychology, education and agriculture.

"The Royal Statistical Society' was founded in London.

During the time of Mughal Emperor Akbar empire the statistical system was mentione in 'Ain-Akbari'.

When an authorised agency or investigator uses the data collected by any other agency or investigator, then such data is called secondary data for the users. For example, if the data of population census used by any agency or investigator for their study, then the data becomes secondary for them.

A set of observations on the numerical variable is called quantitative data. For example, the data on monthly wages of workers of a factory.

A set of observations on the attribute is called qualitative data. For example, the data of education level of workers of a factory.

A set of units selected from the population on the basis of some definite criterion is called sample. For example. a set of randomly selected 90 students from a group of 900 students of a school is sample.

A set of all the units under study is called a population. For example, in population census all the citizens of the country is population.

It is necessary to verify the data carefully before using secondary data to know that whether data is erroneous or suitable with the purpose of the inquiry.

For secondary data, the publication of International Labour Organisation is International Publication.

In the situation where respondents are literate or illiterate the data is obtained by questionnaire by enumerator.

The long questionnaire discourages the respondent to provide accurate answer.

When the field of inquiry is very wide. then method of questionnaire is quite useful to collect primary data.

In indirect inquiry method the reliability of information depends on the ability, honesty and experience of the enumerators.