اختبار احصاء متقدم

الاسم

المجموعة

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ANOVA is prefered method for finding differences among several population proportions

• True
• False

The sum of squares error and the sum of squares treatment add to the sum of squares total

• True
• False

The degrees of freedom for error in an ANOVA are n - r

• True
• False

In an ANOVA, if the sum of squares for error is 400, the sum of squares for treatment is 180, and the total sample size for the four groups compared is 88, then the null hypothesis should not be rejected

• True
• False

What is Singular Value Decomposition (SVD)?

• A technique for clustering data
• A method for finding eigenvalues
• A factorization of a matrix into three other matrices
• A statistical method for hypothesis testing

In SVD, how is the rank of a matrix related to its singular values?

• Rank equals the number of nonzero singular values
• Rank equals the sum of all singular values
• Rank equals the product of all singular values
• Rank equals the maximum singular value

Which of the following statements about SVD is true?

• SVD can only be applied to square matrices
• SVD is not useful for image compression
• SVD is closely related to eigenvalue decomposition
• SVD can only be applied to symmetric matrices

The primary purpose of Ridge Regression and Lasso Regression is .............