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The number of students studying in a college are shown in the following table. Find the trend by four yearly moving averages.

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The number of students studying in a college are shown in the following table. Find the trend by four yearly moving averages.

Year 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015
No of students 332 317 357 392 402 405 410 427 405 438

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Here, n = 10 year. So t = 1, 2, 3, …………, 10; y = No. of students

To calculate 4 yearly moving average the following table is prepared:

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