A researcher is investigating a new screening tool that is intended to help prevent the onset of breast cancer in young women. Suppose he tests the new device on a group of 10 women. The following table shows the test result and true breast cancer status of each of the women. What can we say about the new device with regards to its accuracy? Patient Test Result True Cancer Status A + + B + + C + - D + - E - + F - + G + - H - + I - - J + -
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.
A researcher is investigating a new screening tool that is intended to help prevent the onset of breast cancer in young women. Suppose he tests the new device on a group of 10 women. The following table shows the test result and true breast cancer status of each of the women. What can we say about the new device with regards to its accuracy?
|
Patient |
Test Result |
True Cancer Status |
|
A |
+ |
+ |
|
B |
+ |
+ |
|
C |
+ |
- |
|
D |
+ |
- |
|
E |
- |
+ |
|
F |
- |
+ |
|
G |
+ |
- |
|
H |
- |
+ |
|
I |
- |
- |
|
J |
+ |
- |
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