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Question
UGC NET - 2014
Business Statistics and Research Methods

To show the trend for a variable, which one of the presentation method is used ?

This question was previously asked in
UGC NET 2014 Paper 1 Question Paper (28-Dec-2014)
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The correct answer is

Line graph

A trend is the general movement of a variable over a period of time, so the method used must plot values against time.

A line graph joins the values of a variable at successive points of time with straight lines, which clearly shows rises, falls and the long-term direction. It is the standard way to present a time series.

A histogram and a frequency polygon present a frequency distribution, showing how many observations fall in each class rather than changes over time. A scatter graph plots pairs of values of two variables to show their correlation.

Hence, Line graph.

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