Same Initial Different Initial 19 181
Contingency Table
A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.
Binomial Distribution
Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.
Research has demonstrated that people tend to be attracted to others who are similar to themselves. One study demonstrated that individuals are disproportionally more likely to marry those with surnames that begin with the same letter as their own (Jones et al., 2004). The researchers began looking at marriage records and recording the surname for each groom and the maiden name of each bride. From these records it is possible to calculate the
Do these data indicate that the number of couples with the same last initial is significantly different than would be expected if couples were matched randomly? Test with an alpha of .05.
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