10 Questions
Hierarchical clustering is a type of _______ technique.
Clustering
What is the main goal of hierarchical clustering?
To group similar objects into clusters
Which of the following is NOT a characteristic of hierarchical clustering?
It is a supervised learning technique
What is the typical output of hierarchical clustering?
A dendrogram
What is the advantage of using hierarchical clustering over k-means clustering?
It does not require specifying the number of clusters
What is the primary objective of the least squares method in calculating the line of best fit?
To minimize the sum of the squares of the errors
Which of the following is NOT a characteristic of the least squares method?
It minimizes the mean of the data set
What is the consequence of using the least squares method on a dataset with outliers?
The line of best fit will be less accurate
Why is the least squares method commonly used in regression analysis?
Because it minimizes the sum of the squares of the errors
What is the advantage of using the least squares method over the mean absolute deviation method?
It provides a more accurate fit
Study Notes
Calculating the Line of Best Fit using the Least Squares Method
- The line of best fit is calculated using the least squares method by minimizing the sum of the squares of the errors between the data points and the line of best fit.
- This method is represented by option c.
- The other options are incorrect:
- a. Minimizing the mean of the data set is not a criterion for the least squares method.
- b. Minimizing the sum of the absolute values of the errors is a different method, known as the least absolute deviations method.
- d. Minimizing the variance of the data set is not a direct method for calculating the line of best fit.
Hierarchical Clustering
- Hierarchical clustering is a type of clustering technique.
Least Squares Method
- The line of best fit is calculated using the least squares method by minimizing the sum of the squares of the errors between the data points and the line of best fit.
This quiz question asks about the type of technique that hierarchical clustering belongs to. It's a fundamental concept in data analysis and machine learning.
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