最新なDatabricks Databricks-Certified-Professional-Data-Scientist問題集（140題）、真実試験の問題を全部にカバー！

質問 1：
Which of the following metrics are useful in measuring the accuracy and quality of a recommender system?
A. Sum of Absolute Errors
B. Mean Absolute Error
C. Cluster Density
D. Support Vector Count
正解：B
解説: (Pass4Test メンバーにのみ表示されます)

質問 2：
Google Adwords studies the number of men, and women, clicking the advertisement on search engine during the midnight for an hour each day.
Google find that the number of men that click can be modeled as a random variable with distribution Poisson(X), and likewise the number of women that click as Poisson(Y).
What is likely to be the best model of the total number of advertisement clicks during the midnight for an hour
?
A. Normal(X+Y(M+Y)1/2)
B. Poisson(X+Y)
C. Poisson(X/Y)
D. Binomial(X+Y,X+Y)
正解：B
解説: (Pass4Test メンバーにのみ表示されます)

質問 3：
Which is an example of supervised learning?
A. SVD
B. PCA
C. SVM
D. EM
E. k-means clustering
正解：C
解説: (Pass4Test メンバーにのみ表示されます)

質問 4：
Which of the following is not a correct application for the Classification?
A. image recognition
B. tumor detection
C. drug discovery
D. credit scoring
正解：C
解説: (Pass4Test メンバーにのみ表示されます)

質問 5：
A website is opened 3 times by a user. What is the probability of he clicks 2 times the advertisement, is best calculated by
A. Binomial
B. Normal
C. Any of the above
D. Poisson
正解：A
解説: (Pass4Test メンバーにのみ表示されます)

質問 6：
Select the choice where Regression algorithms are not best fit
A. Weight of the person is given
B. Employee status
C. Temperature in the atmosphere
D. When the dimension of the object given
正解：B
解説: (Pass4Test メンバーにのみ表示されます)

質問 7：
RMSE is a good measure of accuracy, but only to compare forecasting errors of different models for a______, as it is scale-dependent.
A. Among all the variables
B. All of the above are correct
C. Particular Variable
D. Between Variables
正解：C
解説: (Pass4Test メンバーにのみ表示されます)