OGIVE

A Discussion Result of XI IPA 3
 (OGIVE)

Ogive

Ogive is a cumulative frequency graph, which shows data values  on the horozintal axis and either the cumulative frequency on the verticle axis. 

The ogive is divided into 2 kinds. Those are :
1. Positive ogive = Cumulative frequency of less Than
2. Negative ogive = Cumulative frequency og more than

Steps for constructing positive and negative ogive

1.  Draw and label the horizontal and vertical axes.

2. Take the cumulative frequencies along the y and class boundaries on the x axis.
To make a positive ogive we take the cumulative frequency of less then on the Y axis, whereas negative ogive we take the cumulative frequency of more than.

3.  Plot the cumulative frequencies against each class boundaries

4.  Join the points with a smooth curve.

% Let us see with the help of a table how to construct the ogive :

Heigh (cm)	Lower class	Upper class	Frequency	CLass than	More than
135-144	134.5	144.5	4	4	60
145-154	144.5	154.5	6	10	56
155-164	154.5	164.5	15	25	50
165-174	164.5	174.5	16	41	35
175-184	174.5	184.5	15	56	19
185-194	184.5	194.5	4	60	4
Total			60

• Ogive is constructed by plotting a corresponding point the cumulative frequency of each class.
• Positive Curve slope upwards from left to right whereas Negative curve slope downwards from left to right.
  

HOW TO MAKE

1.   Histogram

           Draw the rectangular diagram in the top of mid point with the witdh according to the frequency’s lower class and upper class boundaries. The height of histogram is according to the frequency. 
    2. Polygon frequency

             Make the point in the centre top of histogram. Then connect one point to another with use the straight line.

Name of group :

1. Lantip Titik Sarici (11)

2. Lena Mardiyanah (12)

3. Listiana (13)

4. Meuthia Nurul Isnaeni (14)

5. Naufal Faris (15)