There are four cities (City A, City B, City C and City D) in a country. The average life expectation in these cities are 67.7, 72.3, 85.6 and 59.2, respectively. Moreover, there are 153 residents in City A, 275 in City B, 179 in City C and 277 in City D. Calculate the average life expectancy in this country. Interpret and compare the average life expectancies of four cities and the country.
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.
There are four cities (City A, City B, City C and City D) in a country. The average life expectation in these cities are 67.7, 72.3, 85.6 and 59.2, respectively. Moreover, there are 153 residents in City A, 275 in City B, 179 in City C and 277 in City D.
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Calculate the average life expectancy in this country.
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Interpret and compare the average life expectancies of four cities and the country.
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