The area of histogram of a data and its frequency polygon are same. Reason how.

Weekly wages of 250 workers in a factory are given in the following table. Construct the histogram and frequency polygon on the same graph for the data given.

Is it necessary to draw histogram for drawing a frequency polygon?

The wavelength of a radiowave is 1 m. Find its frequency:

How is wavelength of a wave changes as its frequency increases ?

The area of the circle and the area of a regular polygon of n sides and of perimeter equal to that of the circle are in the ratio of

The apparent frequency and real frequency of sound are the same (A) If source of sound and observer are moving in the same direction with same speed (B) If source of sound and observer are moving in the opposite direction with the same speed

The first overtone of an open pipe has frequency n. The first ovetone of a closed pipe of the same length will have frequency

The perimeters of a rectangle and a square are same. If the length and breadth of the rectangle are 35 cm and 25 cm respectively, find which figure has greater area and by how much.

The perimeters of a rectangle and a square are same. If the length and breadth of the rectangle are 40m and 32m. respectively, Find which has greater area and by how much?

Ages of 60 teachers in primary schools of a Mandal are given in the following frequency distribution table. Construct the Frequency polygon and frequency curve for the data without using the histogram. (Use separate graph sheets)