Stat I mid test

Sources of Primary data.

• Direct personal observation

• Information through mailed questionnaire.

• Make interview

• All

• None

The data which has already been collected by someone, that has undergone a statistical treatment like sorting and tabulation is called as secondary data.

• True

• false

• no answer

The information which has just been collected from the source and has not gone through any kind of statistical treatment like sorting and tabulation is called as primary data.

• True

• False

• no answer

Sample is a branch of science that deals in collection, processing, presentation, analysis and interpretation of numerical data in order to make decision.

• True

• False

• no answer

The following are the uses of statistics:

i. It helps in collection of data.

ii.  ii. It is used for presentation of data.

iii. It helps in processing of data.

iv. It is used for comparison of data.

• True

• False

• no answer

A measurable quantity which varies from one individual or object to another is called data.

• True

• False

• no answer

How many types of data variable?

• Quantitative variable

• Qualitative variable

• All

• None

A measurable variable is known as  variable. for example, height, weight, length.

• continuous

• discrete

• All

• None

The process of arranging data into classes or categories according to some common characteristics present in the data is called classification.

• True

• False

• No answer

Frequency is the number of values in a specific class of the distribution.

• True

• False

• No answer