Do 1-3rd question please

QUESTION 1 Fill in the blank. "In the original dataset is split once into two subsets, model is developed using the training data and model is evaluated using the testing data." Simple/single split O k-Fold cross validation Overfitting Area under the curve QUESTION 2 Which of the following is a segmentation model that classifies the items in a dataset based on pairwise distances between these items until every observation is linked into one large group? Market-basket analysis O Logistic regression Simple split Hierarchical clustering QUESTION 3 Use the following description for Questions 3-5. Assume there are 4 students (Sam, Joe, Max and Hannah), and we want to develop a hierarchical clustering model to group the students into clusters. The input variables used in this clustering model to calculate the distance values are: Midterm exam grade (measured as grade points on a scale from 0 to 100) and Final exam grade (measured as grade points on a scale from 0 to 100). Euclidean distance values (measured as grade points) between all pairs of students are given in Table 1 below. For example, the Euclidean distance between Sam and Max is 11 points. Table 1. Distance values between all student pairs Sam Joe Max Joe In Max Hannah Question 3. Is the statement true or false? "The input variables used in this model are not on the same scale, and this makes comparing the distance between students difficult. We need to convert the input variables to be on a similar scale by standardizing." True False Click So