10. Eleven sets of fraternal twins are tracked to see the number of years of education. The results are as follows: Sister 14 16 13 12 19 9. 12 14 11 16 Brother 16 17 12 14 19 11 18 17 14 17 16 Is there a significant difference in the years of education between a fraternal brother and sister? (a = .10) 20

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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.