Table 11 - Odds of Developing Brain Cancer by Exposure to EM Waves Cancer No Cancer Total Exposed to EM waves Not Exposed to EM waves 10 unknown 6 56 unknown OR =
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.
Given Information:
| Cancer | No cancer | |
| Exposed to EM waves | 7 | 10 |
| Not Exposed to EM waves | 6 | 56 |
Odds ratio OR is given by the formula:
Odds ratio is calculated as follows:
People with cancer: people who were exposed to EM waves/ people who were not exposed to EM waves =
People with no cancer: people who were exposed to EM waves/ people who were not exposed to EM waves =
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