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The factor (categorical) variable is:

Output A Click on the above link! Participants were either paid or asked to volunteer their time to help out with a very boring research study. Participants then rated how interesting they thought the study was.  Which group thought the task was more interesting?

Which of the following is a parameter? ✨Hint:  A parameter describes the entire population.

Output A Click on the above link! Participants were either paid or asked to volunteer their time to help out with a very boring research study. Participants then rated how interesting they thought the study was.  How many TOTAL participants were in this study?

Which of the following are true about PCA?

The elbow method can always provide the optimal K value for K means clustering?

You are using gradient descent to minimize the cost function:

Which type of averaging is better when dealing with imbalanced datasets?

For the following data, if you fit a linear regression model, what would be the intercept value?X = [1, 2, 3], y = [2, 4, 6]

What is the purpose of a validation set?