A survey of 523 adults aged 18-24 year olds was conducted in which they were asked what they did last Friday night.  It found: 160 watched TV 178 hung out with friends 190 ate pizza 25 watched TV and ate pizza, but did not hang out with friends 40 watched TV and hung out with friends, but did not eat pizza 42 hung out with friends and ate pizza, but did not watch TV 26 watched TV, hung out with friends, and ate pizza How may 18-24 year olds did not do any of these three activities last Friday night?

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.