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A database consists of one fact table that is composed of multiple dimensions. Depending on the dimension, each one can be represented by a denormalized table or multiple normalized tables.
A database consists of one fact table that is composed of multiple dimensions. Depending on the dimension, each one can be represented by a denormalized table or multiple normalized tables. This structure is an example of a:A . transactional schema.B . star schema.C . non-relational schema.D . snowflake schema.View AnswerAnswer:...
Which of the following describes the method of sampling in which elements of data are selected randomly from each of the small subgroups within a population?
Which of the following describes the method of sampling in which elements of data are selected randomly from each of the small subgroups within a population?A . Simple randomB . ClusterC . SystematicD . StratifiedView AnswerAnswer: D Explanation: This is because stratified is a type of sampling in which elements...
Which of the following is the NEXT step the analyst should take in the dashboard creation process?
An analyst has received the requirements for an internal user dashboard. The analyst confirms the data sources and then creates a wireframe. Which of the following is the NEXT step the analyst should take in the dashboard creation process?A . Optimize the dashboard.B . Create subscriptions.C . Get stakeholder approval.D...
Which of the following descriptive statistical methods are measures of central tendency? (Choose two.)
Which of the following descriptive statistical methods are measures of central tendency? (Choose two.)A . MeanB . MinimumC . ModeD . VarianceE . CorrelationF . MaximumView AnswerAnswer: A, C Explanation: Mean and mode are measures of central tendency, which describe the typical or most common value in a distribution of...
Which of the following are the BEST reasons to validate data for quality control purposes?
An analyst has been asked to validate data quality. Which of the following are the BEST reasons to validate data for quality control purposes? (Choose two.)A . RetentionB . IntegrityC . TransmissionD . ConsistencyE . EncryptionF . DeletionView AnswerAnswer: B, Explanation: Integrity and D. Consistency. This is because integrity and...
Which of the following BEST describes the data set?
Refer to the exhibit. Given the following data: Which of the following BEST describes the data set?A . There is data bias.B . The data is incomplete.C . The data is inconsistent.D . The data is outliers.View AnswerAnswer: C Explanation: This is because inconsistency is a type of data quality...
Which of the following summary statements upholds integrity in data reporting?
Refer to the exhibit. Given the following graph: Which of the following summary statements upholds integrity in data reporting? A. Sales are approximately equal for Product A and Product B across all strategies. B. Strategy 4 provides the best sales in comparison to other strategies. C. While Strategy 2 does...
Which of the following are the most common issues?
The ACME Corporation hired an analyst to detect data quality issues in their Excel documents. Which of the following are the most common issues? (Select TWO)A . Apostrophe.B . Commas.C . Symbols.D . Duplicates.E . Misspellings.View AnswerAnswer: D, E Explanation:
Which of the following data manipulation techniques should the data analyst use to create "Income Categories"?
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...
Which of the following data schemas shown?
Refer to the exhibit. Given the diagram below: Which of the following data schemas shown?A . Key-value pairsB . Online transactional processingC . Data LakeD . Relational databaseView AnswerAnswer: D Explanation: A relational database is a type of database that organizes data into tables, where each table has a fixed...
