The following contingency table gives the results of a sample survey of South African male and female respondents with regard to their preferred supermarket: Preferred Supermarket Pick n Pay Checkers Woolworths Total No. of Females 60 70 115 245 No. of Males 50 70 35 155 Total 110 140 150 400 Q.1.1.1 What is the probability of randomly selecting a female respondent from the sample? Q.1.1.2 What is the probability of randomly selecting a respondent who is male and prefers Checkers? Q.1.1.3 What is the probability of selecting a female respondent, given that the preferred supermarket is Pick n Pay?

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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.