Need to study practice questions Wgu
A data analyst at a retail company is provided with a large dataset containing sales
transactions, customer information, and product details. The analyst is tasked with
preparing the data for analysis and modeling.
Which activity would the analyst perform during the data preparation phase? - answer
Exploring available data to understand its characteristics and suitability
Which job position is primarily responsible for designing and constructing data pipelines
within the field of data analytics? - answer Data engineer
A pivot table is created using R
programming representing 12 categories of food or grocery items with the
corresponding unit sales and revenue generated over the last year. The scatterplot
between the unit sale and revenue earned is sum_unit and sum_dollars, respectively.
Scatterplot:
Which data analytics techniques will be impactful based on the scatterplot? -
answerLinear regression model
Which tool is used to connect users to relational databases and data warehouse
appliances in the model planning phase? - answerSAS/ACCESS
Which regression model is commonly used for predicting a continuous numerical
outcome based on a set of input features? - answerLinear regression
Which phase is the immediate predecessor to the operationalize phase of the data
analytics life cycle? - answerCommunicate results
Which common data cleaning task is used to address the missing data in a data set? -
answerimputation
A data analyst is working on a project to identify the main reasons for customer
complaints and is planning to review the data.
Which question should the analyst consider in this scenario? - answerAre all the
relevant variables present?
A data analyst plans to explore possible indicators of fraud in bank transactions. The
analyst is considering different tools that can be used to collect the data needed.
Which question should the analyst consider when identifying the tool to use? -
answerWhat is the format and structure of the data?
Which activity occurs during the data preparation phase of the data analytics lifecycle? -
answerUnderstanding of data
A data analyst at a retail company is provided with a large dataset containing sales
transactions, customer information, and product details. The analyst is tasked with
preparing the data for analysis and modeling.
Which activity would the analyst perform during the data preparation phase? - answer
Exploring available data to understand its characteristics and suitability
Which job position is primarily responsible for designing and constructing data pipelines
within the field of data analytics? - answer Data engineer
A pivot table is created using R
programming representing 12 categories of food or grocery items with the
corresponding unit sales and revenue generated over the last year. The scatterplot
between the unit sale and revenue earned is sum_unit and sum_dollars, respectively.
Scatterplot:
Which data analytics techniques will be impactful based on the scatterplot? -
answerLinear regression model
Which tool is used to connect users to relational databases and data warehouse
appliances in the model planning phase? - answerSAS/ACCESS
Which regression model is commonly used for predicting a continuous numerical
outcome based on a set of input features? - answerLinear regression
Which phase is the immediate predecessor to the operationalize phase of the data
analytics life cycle? - answerCommunicate results
Which common data cleaning task is used to address the missing data in a data set? -
answerimputation
A data analyst is working on a project to identify the main reasons for customer
complaints and is planning to review the data.
Which question should the analyst consider in this scenario? - answerAre all the
relevant variables present?
A data analyst plans to explore possible indicators of fraud in bank transactions. The
analyst is considering different tools that can be used to collect the data needed.
Which question should the analyst consider when identifying the tool to use? -
answerWhat is the format and structure of the data?
Which activity occurs during the data preparation phase of the data analytics lifecycle? -
answerUnderstanding of data
