Class 08 Activity – Data handling

Objective: 

To collect, classify and represent data as a histogram.

Materials Required: 

White sheets of paper, squared paper, colour pencils, a pair of scissors, glue stick, geometry box, etc.

Procedure:

1. For every student of your class (including yourself), find the number of hours he/ she spent in watching

 T.V. on the previous Sunday. The data may be recorded in the tabular form as shown below:

2. Now, draw a histogram on a squared paper representing the class intervals along the horizontal axis and the frequency along the vertical axis as shown below.

Observations:

The bar corresponding to the class 3-4 is longest, So, maximum number of students of your class spent 3 to 4 hours in watching T.V.

2. The bar corresponding to the class 4-5 is shortest. So, minimum number of students of your class spent 4 to 5 hours in watching T.V.

3. Length of the bar corresponding to the class 0-1 = 5

Length of the bar corresponding to the class 1-2 = 9

Length of the bar corresponding to the class 2-3 = 8

Length of the bar corresponding to the class 3-4 = 12

Length of the bar corresponding to the class 4-5 = 3

      Total = 37

Thus, there are 37 students in your class.

4. The number of students who spent less than 3 hours in watching T.V.= 5 + 9 + 8 = 225. 

The number of students who spent 3 or more than 3 hours in watching T.V. = 12 + 3 = 15

Note: The data given above is for your comprehension. The students must do the activity and collect the data.

Do Yourself:

 Do a survey of your class and collect the data from every student of your class(including yourself) to find the number of minutes he/ she spent in playing any outdoor game.

Represent the collected data in the form of a histogram.