Worksheetsاختبار احصاء متقدم
Total questions: 12
Worksheet time: 8mins
Name
Class
Date
1.
الاسم
4 lines
2.
المجموعة
a)
11
b)
12
c)
13
d)
14
3.
ANOVA is prefered method for finding differences among several population proportions
a)
True
b)
False
4.
The sum of squares error and the sum of squares treatment add to the sum of squares total
a)
True
b)
False
5.
The degrees of freedom for error in an ANOVA are n - r
a)
True
b)
False
6.
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
a)
True
b)
False
7.
What is Singular Value Decomposition (SVD)?
a)
A technique for clustering data
b)
A method for finding eigenvalues
c)
A factorization of a matrix into three other matrices
d)
A statistical method for hypothesis testing
8.
In SVD, how is the rank of a matrix related to its singular values?
a)
Rank equals the number of nonzero singular values
b)
Rank equals the sum of all singular values
c)
Rank equals the product of all singular values
d)
Rank equals the maximum singular value
9.
Which of the following statements about SVD is true?
a)
SVD can only be applied to square matrices
b)
SVD is not useful for image compression
c)
SVD is closely related to eigenvalue decomposition
d)
SVD can only be applied to symmetric matrices
10.
The primary purpose of Ridge Regression and Lasso Regression is (a)
11.
In Ridge Regression, (a) is added to the cost function to introduce regularization
12.
(a) is the purpose of the regularization term in Ridge Regression and Lasso Regression
100 %
