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Test: Mapping of Data - UGC NET MCQ


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10 Questions MCQ Test - Test: Mapping of Data

Test: Mapping of Data for UGC NET 2024 is part of UGC NET preparation. The Test: Mapping of Data questions and answers have been prepared according to the UGC NET exam syllabus.The Test: Mapping of Data MCQs are made for UGC NET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Mapping of Data below.
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Test: Mapping of Data - Question 1
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What is the primary purpose of using graphical representation techniques in data analysis?

Detailed Solution for Test: Mapping of Data - Question 1
Graphical representation techniques such as charts and graphs are employed to present data in a visually understandable manner. This helps to convey complex information quickly and efficiently, enabling viewers to interpret essential data with minimal effort and time. By using graphical representations, data can be presented in a format that highlights trends, comparisons, and relationships among variables, making it easier for decision-makers to grasp key insights.
Test: Mapping of Data - Question 2
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Which graphical representation is best suited for comparing the distribution of categories?

Detailed Solution for Test: Mapping of Data - Question 2
A histogram is best suited for comparing the distribution of categories because it displays data in bars where the height represents the frequency of each category. This graphical representation allows viewers to see the frequency distribution and easily compare the number of observations in different categories or bins. Histograms are commonly used in statistics to illustrate the shape and spread of data sets.
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Test: Mapping of Data - Question 3
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What distinguishes a line graph from a bar chart?

Detailed Solution for Test: Mapping of Data - Question 3
A line graph distinguishes itself from a bar chart by showing trends over time or continuous data points connected by lines. In contrast, a bar chart compares categories or discrete data points using bars of different lengths. Line graphs are useful for illustrating changes or trends in data over time, making them ideal for visualizing data in scenarios like stock market trends or population growth rates.
Test: Mapping of Data - Question 4
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When is a pie chart most useful for data representation?
Detailed Solution for Test: Mapping of Data - Question 4
A pie chart is most useful for data representation when comparing the distribution of categories as parts of a whole. It shows the relationship of parts to a whole, where each category is represented by a slice of the pie, sized proportionally to the quantity it represents. This graphical representation is effective for visually highlighting the relative sizes or percentages of different categories within a dataset, such as market shares or budget allocations.
Test: Mapping of Data - Question 5
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Which graphical technique is commonly used to illustrate trends over time?
Detailed Solution for Test: Mapping of Data - Question 5
A line graph is commonly used to illustrate trends over time by plotting data points on a graph with a line connecting them. It shows how a variable changes over time, making it easier to observe patterns, fluctuations, or trends. Line graphs are widely used in various fields such as economics, weather forecasting, and scientific research to visualize changes in data over continuous time intervals.
Test: Mapping of Data - Question 6
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What type of data is best represented using a scatter plot?
Detailed Solution for Test: Mapping of Data - Question 6
A scatter plot is best used to represent relationships between two continuous variables. It displays data points as dots on a graph, where each dot represents an observation with values for two variables plotted along the X-axis and Y-axis. Scatter plots are valuable for identifying patterns or relationships between variables, such as correlation or trends, providing insights into how changes in one variable affect another.
Test: Mapping of Data - Question 7
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In which type of graphical representation are class intervals and frequencies depicted?
Detailed Solution for Test: Mapping of Data - Question 7
Class intervals and frequencies are depicted in a histogram. A histogram uses adjacent rectangles to represent the frequency distribution of continuous data. The width of each rectangle (bar) corresponds to the class interval, while the height represents the frequency of data points falling within that interval. Histograms are commonly used in statistics to summarize large datasets and visualize their distribution patterns.
Test: Mapping of Data - Question 8
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What is the primary advantage of using graphical representation over tabular form for presenting data?
Detailed Solution for Test: Mapping of Data - Question 8
The primary advantage of using graphical representation over tabular form is that it simplifies complex data analysis by presenting information visually. Graphs and charts enable viewers to quickly grasp trends, patterns, and relationships within the data, which may be obscured when presented in a tabular format. This visual clarity aids in decision-making and communication of insights derived from data analysis.
Test: Mapping of Data - Question 9
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When might a bar chart be preferred over a pie chart for data representation?
Detailed Solution for Test: Mapping of Data - Question 9
A bar chart might be preferred over a pie chart when comparing the distribution of categories because it allows for easier comparison between discrete data points or categories. Bar charts use bars of varying lengths to represent different categories, making it straightforward to compare quantities or frequencies across categories. In contrast, a pie chart emphasizes the proportion of each category relative to the whole but may not facilitate direct comparison between categories as effectively.
Test: Mapping of Data - Question 10
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How does a line graph differ from a histogram?
Detailed Solution for Test: Mapping of Data - Question 10
A line graph differs from a histogram in that a line graph shows trends over time or continuous data by connecting data points with a line, illustrating changes or patterns. In contrast, a histogram compares categories or frequency distributions of data using adjacent rectangles (bars), where the height of each bar represents the frequency of data points falling within specific class intervals. Line graphs are ideal for visualizing data trends, while histograms are used to display the distribution of numerical data.
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