2. When we are dealing with nominal data, we typically prefer to use the mode as the preferred measure of center. Why are we unable to use the mean as the measure of center for nominal data?
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.
Number 2
Mode is the only measure of central tendency that is used when dealing with nominal data.
Nominal variable is a variable in which the data values are divided into categories.
For example, if we want to categorise male and female respondents, we can use numbers 1 and 2 to represent them. That is, 1 for male and 2 for female. However, the values 1 and 2 in this case serve only as labels. They do not represent any meaningful order or carry any mathematical meaning.
Calculating mean of all 1's and 2's will not give us any mathematical meaning. Since, they are simply used as labels for male and female.
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