The weekly wages (in Rs) of 30 workers in a factory are:
830, 835, 890, 810, 835, 836, 869, 845, 898, 890, 820, 860, 832, 833, 855, 845, 804, 808, 812, 840, 885, 835, 835, 836, 878, 840, 868, 890, 806, 840
Using tally marks make a frequency table with intervals as 800–810, 810-820 and so on.

Read the following bar-graph and answer the following questions.

(i) What is the information given by the bar graph?
(ii) In which year is the increase in the number of students is maximum?
(iii) In which year is the number of students maximum?
(iv) Is the number of students during 2005-06 twice that of 2003-04?

Read the following bar-graph and answer the following questions.

(i) What is the information given by the double bar graph?
(ii) In which subject has the performance improved the most?
(iii) In which subject the performance deteriorated?
(iv) In which subject is the performance at par?

A group of students was asked for their favorite subject. The results were listed as under:

Answer the following questions:
(i) Which is the most liked subject?
(ii) Which is the least liked subject?

(i) How many teachers are of age 45 years or more but less than 50 years?
(ii) How many teachers are of age less than 35 years?

(i) Find the fraction of the circle representing each of these given information.
(ii) What is the central angle corresponding to the activities “Play and Home work” ?