The customers of Rhythm Time, an online music service, downloaded 439,229 songs this year. That number is 70% higher than last year. How many songs did they downloaded last year?
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.
The customers of Rhythm Time, an online music service, downloaded 439,229 songs this year. That number is 70% higher than last year. How many songs did they downloaded last year?
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