Collection Of Data
Chapter Name : Statistics |
Sub Topic Code : 104_09_14_02_01 |
Topic Name : Collection Of Data |
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Sub Topic Name : Collection Of Data |
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Introduction
Data are primarily collected to provide information regarding a specific topic.
Pre-Requisites:
Idea about tables & numbers.
Activity:
Divide the students of your class into four groups. Allot each group the work of collecting one of the following kinds of data: (i) Heights of 20 students of your class. (ii) Number of absentees in each day in your class for a month. (iii) Number of members in the families of your classmates.
Real Life Question:
What is the height of all the students of your class? How many members of your family earn more than Rs 20000 in a month?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Primary Data | The information collected directly with a definite objective. |
| Secondary Data | The information gathered from a source which already had the information stored. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|
Real life uses :
Scientific data archiving, data management, statistical survey, survey data collection.
Practical examples around us
| Examples | Explainations |
|---|---|
| 1. Census | A census refers to data collection about everyone or everything in a group. |
| 1. Survey | Survey is collection of information from a sample of individuals in a systematic way about products, ideas etc. |
| 1. Topological Maps | These maps are formed after collection of geographical information about the area. |
What you learn in Theory:
What is data collection?
What you learn in Practice:
How to collect data.