This app was created to predict the species of iris using four different measurements from the plant.
The following measurements can be selected on four separate sliders.

• Petal Length
  
• Petal Width
  
• Sepal Length
  
• Sepal Width

The slider minimum and maximum values were found using the summary for the iris data.

summary(iris)

  Sepal.Length    Sepal.Width     Petal.Length    Petal.Width   
 Min.   :4.300   Min.   :2.000   Min.   :1.000   Min.   :0.100  
 1st Qu.:5.100   1st Qu.:2.800   1st Qu.:1.600   1st Qu.:0.300  
 Median :5.800   Median :3.000   Median :4.350   Median :1.300  
 Mean   :5.843   Mean   :3.057   Mean   :3.758   Mean   :1.199  
 3rd Qu.:6.400   3rd Qu.:3.300   3rd Qu.:5.100   3rd Qu.:1.800  
 Max.   :7.900   Max.   :4.400   Max.   :6.900   Max.   :2.500  
       Species  
 setosa    :50  
 versicolor:50  
 virginica :50  
                
                
                

The app produces a value that can be interpreted through instructions given in the output panel. Essentially, the confidence in the prediction is related in how close the numbers come to crossing over the different thresholds for each species.

Example: The value given is 1.8934.
As this number is within the range considered versicolor, the primary prediction would be versicolor; however, it might also be virginica based on how close it is to the threshold of 2.