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The table below gives the size of the freshman class entering BSC for the past several years.
Class of
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
Size
1178
1297
1304
1305
1332
1361
1584
1502
1479
1460
a) Compute the expected value of the size of the freshman class. (Assume each size listed above is equally likely).
b) Compute the standard deviation of the size of the freshman class.
c) Based on your answers to part (a) and (b), would you say that the size of the freshman class at BSC was extremely variable or fairly constant over the last ten years? Explain your reasoning.
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