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17
Jul
Algebraic Formulae

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20
Jun
Index
1   Tabulation 

2   Bar  Graphs

3  Pie Chart

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20
Jun
Answers

22.1  Tabulation

1 (c) , 2 (d) , 3 (b) , 4 (b) , 5 (d) , 6 (c) , 7 (c) ,

8 (d) ,

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20
Jun
Line Graphs

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….

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20
Jun
Pie Chart

Pie Chart

V.  The following pie-chart shows the sources of funds to be collected by the National Highways Authority of USA ( NHAI ) for its Phase III projects. Study the pie-chart and answer …

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20
Jun
2   Bar  Graphs

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
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20
Jun
Data Interpretation

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 …

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20
Jun
Index

01. Introduction

02. The  Types  of   Class

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20
Jun
Examples 12 to 14

(12) Find the mean deviation of  15, 18, 20, 10, 12.

Soln.  \overline{x} =  

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20
Jun
Examples 9 to 11

(9) Find the median of  15, 35, 42, 45, 18.

Soln. Writing them in ascending order :  15, 18, 35, 42, 45.   Here,  n  =  5.

\therefore M   =

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