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Chapters
2: Data Processing
3: Graphical Representation of Data
▶ 4: Use of Computer in Data Processing and Mapping
5: Field Surveys
6: Spatial Information Technology
![NCERT solutions for Practical Work in Geography [English] Class 12 chapter 4 - Use of Computer in Data Processing and Mapping - Shaalaa.com](/images/practical-work-in-geography-english-class-12_6:b17ea400b5194a138b840ecca9189d11.jpg "NCERT solutions for Practical Work in Geography [English] Class 12 chapter 4 - Use of Computer in Data Processing and Mapping")
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Solutions for Chapter 4: Use of Computer in Data Processing and Mapping
Below listed, you can find solutions for Chapter 4 of CBSE NCERT for Practical Work in Geography [English] Class 12.
NCERT solutions for Practical Work in Geography [English] Class 12 4 Use of Computer in Data Processing and Mapping Exercise [Page 69]
Choose the correct option for the alternatives given below:
What type of graph would you use to represent the following data?
| States | Share of Production of Iron-Ore (in %) |
| Madhya Pradesh | 23.44 |
| Goa | 21.82 |
| Karnataka | 20.95 |
| Bihar | 16.98 |
| Odisha | 16.30 |
| Andhra Pradesh | 0.45 |
| Maharashtra | 0.04 |
Line
Multiple bar graph
Pie-diagram
None of the above
Districts within a state would be represented in which type of spatial data?
Points
Lines
Polygons
None of the above
Which is the operator that is calculated first in a formula given in a cell of a worksheet?
+
-
/
×
Function Wizard in Excel enables you to:
Construct graphs
Carry out mathematical/ statistical operations
Draw maps
None of the above
Answer the following questions in about 30 words:
What are the functions of different parts of a computer?
What are the advantages of using computer over manual methods of data processing and representation?
What is a worksheet?
Answer the following questions in about 125 words:
What is difference between spatial and non-spatial data? Explain with examples.
What is the three forms of geographical data?
NCERT solutions for Practical Work in Geography [English] Class 12 4 Use of Computer in Data Processing and Mapping Activity [Page 70]
Carry out the following steps using the given data set:
- Enter the given data in a file and store in ‘My Documents’ folder (Name the file as rainfall).
- Calculate the standard deviation and mean for the given data set using Function Wizard in Excel spreadsheet.
- Compute coefficient of variation using the results derived in step (b).
- Analyze the results.
Represent the data given below using a suitable technique with the help of a computer and analyse the graph.
Cropping Intensity in India
| Year_80s | CI_80s | Year_90s | CI_90s |
| 1980-81 | 123.3 | 1990-91 | 129.9 |
| 1981-82 | 124.5 | 1991-92 | 128.7 |
| 1982-83 | 123.2 | 1992-93 | 130.1 |
| 1983-84 | 125.7 | 1993-94 | 131.1 |
| 1984-85 | 125.2 | 1994-95 | 131.5 |
| 1985-86 | 126.7 | 1995-96 | 131.8 |
| 1986-87 | 126.4 | 1996-97 | 132.8 |
| 1987-88 | 127.3 | 1997-98 | 134.1 |
| 1988-89 | 128.5 | 1998-99 | 135.4 |
| 1989-90 | 128.1 | 1999-00 | 134.9 |
Solutions for 4: Use of Computer in Data Processing and Mapping
NCERT solutions for Practical Work in Geography [English] Class 12 chapter 4 - Use of Computer in Data Processing and Mapping
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Concepts covered in Practical Work in Geography [English] Class 12 chapter 4 Use of Computer in Data Processing and Mapping are Construction of Graphs, Computer Assisted Mapping, Mapping Software and Their Functions, Computer Hardware and Software, What Can a Computer do?, Hardware Configuration and Software Requirements.
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