최신 Databricks-Certified-Professional-Data-Scientist 무료덤프 - Databricks Certified Professional Data Scientist

문제1

Select the correct statement which applies to K-Nearest Neighbors

A. Computationally expensive

B. Require less memory

C. Works with Numeric Values

D. No Assumption about the data

정답: A,C,D

설명: (DumpTOP 회원만 볼 수 있음)

문제2

Which of the following is a Continuous Probability Distributions?

A. Poisson probability distribution

B. Negative binomial distribution

C. Normal probability distribution

D. Binomial probability distribution

정답: C

문제3

You are studying the behavior of a population, and you are provided with multidimensional data at the individual level. You have identified four specific individuals who are valuable to your study, and would like to find all users who are most similar to each individual. Which algorithm is the most appropriate for this study?

A. Association rules

B. K-means clustering

C. Linear regression

D. Decision trees

정답: B

설명: (DumpTOP 회원만 볼 수 있음)

문제4

Projecting a multi-dimensional dataset onto which vector has the greatest variance?

A. first principal component

B. first eigenvector

C. second eigenvector

D. not enough information given to answer

E. second principal component

정답: A

설명: (DumpTOP 회원만 볼 수 있음)

문제5

Select the correct statement regarding the naive Bayes classification

A. it only requires a small amount of training data to estimate the parameters

B. Independent variables can be assumed

C. only the variances of the variables for each class need to be determined

D. for each class entire covariance matrix need to be determined

정답: A,B,C

설명: (DumpTOP 회원만 볼 수 있음)

문제6

If E1 and E2 are two events, how do you represent the conditional probability given that E2 occurs given that E1 has occurred?

A. P(E2)/P(E1)

B. P(E2)/(P(E1+E2)

C. P(E1)/P(E2)

D. P(E1+E2)/P(E1)

정답: A

문제7

Let's say you have two cases as below for the movie ratings
1. You recommend to a user a movie with four stars and he really doesn't like it and he'd rate it two stars
2. You recommend a movie with three stars but the user loves it (he'd rate it five stars). So which statement correctly applies?

A. In both cases, the contribution to the RMSE is the same

B. In both cases, the contribution to the RMSE, could varies

C. None of the above

D. In both cases, the contribution to the RMSE is the different

정답: A

문제8

You are working as a data science consultant for a gaming company. You have three member team and all other stake holders are from the company itself like project managers and project sponsored, data team etc.
During the discussion project managed asked you that when can you tell me that the model you are using is robust enough, after which step you can consider answer for this question?

A. Model planning

B. Data Preparation

C. Operationalize

D. Model building

E. Discovery

정답: D

설명: (DumpTOP 회원만 볼 수 있음)

문제9

You have data of 10.000 people who make the purchasing from a specific grocery store. You also have their income detail in the data. You have created 5 clusters using this data. But in one of the cluster you see that only 30 people are falling as below 30, 2400, 2600, 2700, 2270 etc." What would you do in this case?

A. You will be increasing number of clusters.

B. You will be decreasing the number of clusters.

C. You will remove that 30 people from dataset

D. You will be multiplying standard deviation with the 100

정답: B

설명: (DumpTOP 회원만 볼 수 있음)

문제10

Which of the following skills a data scientists required?

A. Should possess good programming skills

B. He should possess database administrative skills.

C. He should be creative

D. Should be very good at mathematics and statistic

E. Web designing to represent best visuals of its results from algorithm.

정답: A,C,D

설명: (DumpTOP 회원만 볼 수 있음)

최신 Databricks-Certified-Professional-Data-Scientist 무료덤프 - Databricks Certified Professional Data Scientist

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