Today, we continue to give you the 5 questions in the CDA LEVEL I data analysis certification exam simulation question bank. Similarly, we will announce the correct answers of the previous issue before the questions are asked.
6、D
7、D
8、C
9、A
10、A
Are you all correct? Next, let's do 11-15 questions together.
11. The following steps are part of the factor analysis calculation process ()
A. Estimated factor loading matrix
B. Perform factor rotation
C. Estimate the common factor (factor score)
D. All of the above
12. In factor analysis, in order to help explain the factors, we can use ()
A. Factor score
B. Factor loading
C. Factor rotation
D. Principal component analysis
13. In hierarchical clustering, the variable type of clustering is ()
A. Continuous variables
B. Categorical variables
C. Both are fine
D. Not sure
14. In the following description of hierarchical clustering, what is wrong ()
A. Hierarchical clustering is also called systematic clustering
B. Hierarchical clustering method is usually divided into bottom-up and top-down
C. The process of hierarchical clustering is very clear, and a tree-like clustering map will be formed for easy understanding and inspection
D. Hierarchical clustering is suitable for projects with very large amounts of data or many variables
15. Which of the following clustering methods is also called fast clustering method ()
AK-means clustering method
B. Hierarchical clustering method
C. Hierarchical clustering method
D. Two-step clustering method
Answer the questions carefully, we will announce the correct answer in the next issue, so stay tuned.
CDA data analyst registration method
Log in to the official website of the CDA certification exam to register
URL:
https://www.cdaglobal.com/?source=tuyan
CDA data analyst registration fee
Level Ⅰ：1200 RMB
Level Ⅱ：1700 RMB
Level Ⅲ：2000 RMB
CDA data analyst exam location
Level Ⅰ: 30+ provinces and cities in China, 70+ cities, 250+ examination rooms. Candidates can make appointments for the nearest examination room.
Level Ⅱ+Ⅲ: 30 cities in China, Beijing/Shanghai/Tianjin/Chongqing/Chengdu/Shenzhen/Guangzhou/Jinan/Nanjing/Hangzhou/Suzhou/Fuzhou/Taiyuan/Wuhan/Changsha/Xi'an/Guiyang/Zhengzhou/Nanning/Kunming /Urumqi/Shenyang/Harbin/Hefei/Shijiazhuang/Hohhot/Nanchang/Changchun/Dalian/Lanzhou.
CDA data analyst application conditions and time
Business Data Analyst CDA Level I
▷ Application conditions: No requirements.
▷ Test time: Take the test as you register.
Modeling Analyst CDA Level II
▷ Application conditions (satisfy any one of them):
1. Obtained CDA Level Ⅰ certification;
2. Bachelor degree or above, need to be engaged in data analysis related work for more than 1 year;
3. Bachelor degree or below, must be engaged in data analysis related work for more than 2 years.
▷ Test time:
The last Saturday in March, June, September and December for four sessions a year.
Big Data Analyst CDA Level II
▷ Application conditions (satisfy any one of them):
1. Obtained CDA Level Ⅰ certification;
2. Bachelor degree or above, need to be engaged in data analysis related work for more than 1 year;
3. Bachelor degree or below, must be engaged in data analysis related work for more than 2 years.
▷ Test time:
The last Saturday in March, June, September and December for four sessions a year.
Data Scientist CDA Level III
▷ Application conditions (satisfy any one of them):
1. Obtained CDA Level Ⅱ certification;
2. Bachelor degree or above, must be engaged in data analysis related work for more than 3 years;
3. Bachelor degree or below, and need to be engaged in data analysis related work for more than 4 years.
▷ Test time:
The last Saturday in March, June, September and December for four sessions a year.
(Remarks: Data analysis related work is not limited to industry, and may involve statistics, data analysis, data mining, databases, data management, big data architecture, etc.)