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NEW QUESTION 46
You would like to combine the text in two different strings to form a single string.
What action are you performing?
- A. Case conversion.
- B. Trimming.
- C. Parsing.
- D. Concatenation.
Answer: D
Explanation:
Simply defined, concatenation is the act of linking things together. In Microsoft Excel, the concatenation function is one of many text functions, which allows users to combine data distributed over multiple columns.
The concatenation of two or more numbers is the number formed by concatenating their numerals.
For example, the concatenation of 1, 234, and 5678 is 12345678.
NEW QUESTION 47
Which one of the following would not normally be considered a summary statistic?
- A. Mean.
- B. Variance.
- C. Standard deviation.
- D. z-score.
Answer: D
Explanation:
Simply put, a z-score (also called a standard score) gives you an idea of how far from the mean a data point is. But more technically it's a measure of how many standard deviations below or above the population mean a raw score is. A z-score can be placed on a normal distribution curve.
NEW QUESTION 48
A data analyst wants to create "Income Categories" that would be calculated based on the existing variable "Income". The "Income Categories" would be as follows:
Income category 1: less than $1.
Income category 2: more than $1 and less than $20,000.
Income category 3: more than $20,001 and less than $40,000.
Income category 4: more than $40,001.
Which of the following data manipulation techniques should the data analyst use to create "Income Categories"?
- A. Data append
- B. Data blending
- C. Derived variables
- D. Data merge
Answer: C
Explanation:
The correct answer is B: Derived variables Derived variables are variables that you create by calculating or categorizing variables that already exist in your data set.
Data merge is incorrect. Data merging is the process of combining two or more data sets into a single data set. Data blending is incorrect.
Data blending involves pulling data from different sources and creating a single, unique, dataset for visualization and analysis.
Data append is incorrect. A data append is a process that involves adding new data elements to an existing database.
NEW QUESTION 49
What European law requires that organizations handling personal information designate a Data Protection Officer (DPO)?
- A. HIPAA (Health Insurance Portability and Accountability Act)
- B. FERPA (Family Educational Rights and Privacy Act)
- C. GLBA (Gramm-Leach-Bliley Act)
- D. GDPR (General Data Protection Regulation)
Answer: D
Explanation:
The General Data Protection Regulation 2016/679 is a regulation in EU law on data protection and privacy in the European Union and the European Economic Area.
NEW QUESTION 50
What type of visualization allows the use of a bar chart for continuous variables?
- A. Tree map
- B. Waterfall chart
- C. Histogram
- D. Line chart
Answer: C
NEW QUESTION 51
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