What are ogives? Discuss the method of constructing ogives with the help of an example

Ogives, also known as cumulative frequency curves, are graphical representations used to display cumulative frequency distributions. They are particularly useful for visualizing and analyzing data sets in a more intuitive manner compared to tables or lists of raw data. Ogives help to identify patterns, trends, and percentiles within the data.

The method of constructing ogives involves the following steps:

1. Organize the data: Arrange the data in ascending or descending order, depending on the nature of the variable being studied.
2. Calculate the cumulative frequencies: For each data point, calculate the cumulative frequency by adding the frequency of that data point to the cumulative frequency of the previous data point. The cumulative frequency for the first data point is ___ ________ _________ ___ _________.
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