Training Machine Learning Models in Power BI

 

Question:

You would like to refresh an ML model to be trained on a new corpus. In which way can you achieve this?

• Retrain the old model with the new data

Question

:

You are creating an ML model that predicts a categorical value that can belong to one of two categories. Which kind of model is this?

• Binary classification

Question

:

This is the confusion matrix for a breast cancer prediction model. What is the number of cases where the patient had cancer, but the model predicted that she didn’t?

• 0

Question

:

This bar chart visualizes the average price of different kinds of cuts for diamonds. Based on this, which type of diamond is most expensive on average?

• Premium

Question

:

You have created a regression model and would like to evaluate its performance. What is a metric you could use for this?

• R-squared

Question

:

When working with the Power BI Service, your Power Query processes for loading and transforming data are stored separately in your workspace. What are these stored transformation processes known as?

• Dataflow

Question

:

This chart visualizes the proportion of correct and incorrect classifications of diamond cuts. Based on this, which one had the highest proportion of incorrect classifications?

• Very Good

Question

:

Power BI allows you to perform cost-benefit analysis to calculate how profitable a marketing campaign is. This analysis uses a number of different parameters. Please match the input parameter to the statement that best describes it.

• Population - 

  The number of customers

• Unit benefit - 

  The reward if a customer responds positively

• Unit cost - The cost to target each customer

Question

:

This box plot visualizes the difference in insurance premiums for smokers and non-smokers. Based on this, what is the medium premium for smokers?

• ~35K

Question

:

You are creating an ML model that estimates a continuous value. Which kind of model is this?

• Regression

Categories: Power BI