Question

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Answer 1

The distributional maps are useful for explaining the patterns of distribution of a particular geographical variable.

The following are the types of distributional maps.

(i) Dot Method : The distributional maps based on statistical data, made by this method make use of dots of a pre-decide size to show the distribution of a particular variable. e.g. Dot method map is used to show population of a region, distribution of cattle etc.

(ii) Choropleth Method : The distributional map made by this method makes use of shades or tints of various colours, to show the distribution of particular variable. e.g. Choropleth method map is used to show population density, types of forest cover, uses of land.

(iii) Isopleth Method : The distributional map made by this method makes use of line joining locations or places having same or equal values of a particular variable. e.g. Isopleth method map is used to show altitude, temperature, rainfall.

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Answer 2

Answer:

Distributional Maps are called thematic maps. Through these maps, distribution of various variables in a region is shown, distribution of temperature, rainfall, population, etc. is shown on the map according to the data of these variables.

The uses and types of distributional maps are:

• uses and types of distributional maps are:Dot Maps – A dot map is prepared using statistical data. While preparing dot maps, only data gathered through counting is used. The way a variable is distributed throughout the region, the dots are used to show its distribution on the map. For example, the population of a region, the distribution of cattle, etc.

uses and types of distributional maps are:Dot Maps – A dot map is prepared using statistical data. While preparing dot maps, only data gathered through counting is used. The way a variable is distributed throughout the region, the dots are used to show its distribution on the map. For example, the population of a region, the distribution of cattle, etc.To show distribution through the dot method, the value of a dot has to be determined. To do that, the lowest and the highest values of a given variable in a region are taken into consideration. Accordingly, the number of dots is determined. Also, we need to consider the size of the dot, the density of the variable and the scale of the map. The dot method is most suitable for that variable which is freely scattered across the region.

• uses and types of distributional maps are:Dot Maps – A dot map is prepared using statistical data. While preparing dot maps, only data gathered through counting is used. The way a variable is distributed throughout the region, the dots are used to show its distribution on the map. For example, the population of a region, the distribution of cattle, etc.To show distribution through the dot method, the value of a dot has to be determined. To do that, the lowest and the highest values of a given variable in a region are taken into consideration. Accordingly, the number of dots is determined. Also, we need to consider the size of the dot, the density of the variable and the scale of the map. The dot method is most suitable for that variable which is freely scattered across the region.Choropleth Maps – In these maps, the data regarding various geographical variables are shown by shades or tints of various colours. While making such maps, the data used for different variables are obtained, through various processes such as measurement, surveying, etc. In this method, only one value is given to one sub administrative unit in a region. The smallest and the largest values of the given data of the variables are taken into consideration.

• uses and types of distributional maps are:Dot Maps – A dot map is prepared using statistical data. While preparing dot maps, only data gathered through counting is used. The way a variable is distributed throughout the region, the dots are used to show its distribution on the map. For example, the population of a region, the distribution of cattle, etc.To show distribution through the dot method, the value of a dot has to be determined. To do that, the lowest and the highest values of a given variable in a region are taken into consideration. Accordingly, the number of dots is determined. Also, we need to consider the size of the dot, the density of the variable and the scale of the map. The dot method is most suitable for that variable which is freely scattered across the region.Choropleth Maps – In these maps, the data regarding various geographical variables are shown by shades or tints of various colours. While making such maps, the data used for different variables are obtained, through various processes such as measurement, surveying, etc. In this method, only one value is given to one sub administrative unit in a region. The smallest and the largest values of the given data of the variables are taken into consideration.Isopleth Maps – In these maps, the distribution was shown with the help of lines showing equal values. When the distribution of a variable is continuous, the isopleth method is then used to show its distribution. For example, altitude, temperature, rainfall, etc. For these maps, we need to obtain the accurate data regarding the altitude, temperature, rainfall, etc. of some places in a region.

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