600 Sun - 11th May

What does a classification model predict?

• Numbers

• Time

• Categories or classes

• Shapes

What is the output of a binary classification model?

• Multiple labels

• Single continuous value

• Two classes like 0 and 1

• Images

Which algorithm is commonly used for binary classification?

• Linear Regression

• Logistic Regression

• K-Means

• PCA

Which function does logistic regression use internally?

• Linear

• Log

• Sigmoid

• ReLU

What is the range of output from a sigmoid function?

• -∞ to +∞

• 0 to 1

• 0 to 100

• -1 to 1

Why do we use logistic regression for classification?

• It handles images

• It gives class probabilities

• It reduces features

• It groups data

What does a threshold value do in classification?

• Scales the data

• Splits into training and test

• Converts probabilities into class labels

• Adds noise

What value is commonly used as the threshold?

• 0.0

• 0.25

• 0.5

• 1.0

Which evaluation metric is best for binary classification?

• Mean Squared Error

• Confusion Matrix

• R-Squared

• Silhouette Score

What does True Positive mean?

• Model predicted wrong class

• Model missed a class

• Model predicted 1 and actual was also 1

• Model gave negative result