educational
Line Graphs
V. In a school the periodical examinations are held every second month. In a session during Apr. 2002 – Mar. 2003, a student of Class XI appeared for each of the periodical exams….
V The bar graph given below shows the foreign exchange reserves of India ( in million US $ ) from 1991-92 to 1998-99. Answer the questions based on this graph.
foreign exchange reserves of INDIA
…
Ú The following table gives the sales of batteries manufactured by Exide company over the years. Study the table and answer the questions that follow :
number of different types of batteries sold by Exide …
(9) Find the median of 15, 35, 42, 45, 18.
Soln. Writing them in ascending order : 15, 18, 35, 42, 45. Here, n = 5.
M =
(5) Find the mode from the data given below :
| Marks Obtained | 0 – 10 | 10 – 20 |
Results on Diagrams
☼ Results on Diagrams : ■ Histogram ( or column graph ) : For frequency distribution for grouped data, classes are converted into real class intervals, that is, class intervals whose endpoint… |