Advertisement

Collecting Data

notes

Collecting Data:

Temperatures of cities as on 20.6.2006

City

Max.

Min.

Ahmedabad 38°C 29°C
Amritsar 37°C 26°C
Bangalore 28°C 21°C
Chennai 36°C 27°C
Delhi 38°C 28°C
Jaipur 39°C 29°C
Jammu 41°C 26°C
Mumbai 32°C

27°C

What do these collections of data tell you?

The data about the temperatures of cities can tell us many things, For example, you can say that the highest maximum temperature was in Jammu on 20.06.2006 but it cannot tell us the city which had the highest maximum temperature during the year. To find that, we need to collect data regarding the highest maximum temperature reached in each of these cities during the year. In that case, the temperature chart of one particular date of the year, as given in the table will not be sufficient. This shows that a given collection of data may not give us specific information related to that data.

For this, we need to collect data keeping in mind that specific information. In the above case, the specific information needed by us was about the highest maximum temperature of the cities during the year, which we could not get from the Table. Thus, before collecting data, we need to know what we would use it for.

  • When the information was collected by the investigator herself or himself with a definite objective in her or his mind, the data obtained is called primary data.

  • When the information was gathered from a source which already had the information stored, the data obtained is called secondary data.
    Such data, which has been collected by someone else in another context, needs to be used with great care ensuring that the source is reliable.

If you would like to contribute notes or other learning material, please submit them using the button below.

Video Tutorials

We have provided more than 1 series of video tutorials for some topics to help you get a better understanding of the topic.

Series 1


Series 2


Shaalaa.com | Collection of Data

Shaalaa.com


Next video


Shaalaa.com


Collection of Data [00:14:51]
S
Series:
0%


Related QuestionsVIEW ALL [11]

Advertisement
Share
Notifications

View all notifications
Login
Create free account


      Forgot password?
View in app×