Understanding Regression Analysis

What is the primary purpose of regression analysis?

• To find the median of a dataset

• To determine the mode of a dataset

• To calculate the mean of a dataset

• To infer or predict one variable based on others

Which of the following is an example of using regression to measure influence?

• Forecasting sales in an online shop

• Calculating the average salary in a company

• Predicting a patient's hospital stay duration

• Determining if parental education affects children's future education

What distinguishes simple linear regression from multiple linear regression?

• Simple linear regression requires more data

• Multiple linear regression is only used for categorical data

• Simple linear regression is more accurate

• Simple linear regression uses one independent variable, while multiple uses several

In which scenario would logistic regression be most appropriate?

• Estimating the total electricity consumption

• Calculating the average height of a group

• Determining if a person will buy a product

• Predicting a person's salary

What type of dependent variable is used in logistic regression?

• Metric

• Continuous

• Ordinal

• Categorical

What is a dummy variable used for in regression analysis?

• To find the median of a dataset

• To calculate the mean of a dataset

• To determine the mode of a dataset

• To represent categorical variables with more than two characteristics

In the housing market example, what is the dependent variable?

• Price per square meter

• Number of rooms

• Size of the house

• Distance from the city center

Which type of regression is automatically calculated in the housing market example?

• Logistic regression

• Simple linear regression

• Multiple linear regression

• Linear regression

What should be checked before calculating a regression?

• The assumptions of the regression

• The mean of the dataset

• The mode of the dataset

• The median of the dataset

What is the role of AI in the housing market example?

• To determine the mode of the dataset

• To calculate the mean of the dataset

• To automatically interpret the regression results

• To collect the data