Question 211 · 365 in bank
Which of the following file formats is best suited to start exploratory analysis within statistical software?
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Answer: A
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DA0-001 practice questions 211–220
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Question 212 · 365 in bank
An analyst wants to model the relationship between a set of continuous variables in order to predict the value of an output variable based on the values of a set of input variables. Which of the following types of analyses should the analyst use?
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Answer: C
Question 213 · 365 in bank
A data analyst has been asked to derive a new variable labeled “Promotion_flag” based on the total quantity sold by each salesperson. Given the table below:
Which of the following functions would the analyst consider appropriate to flag “Yes” for every salesperson who has a number above 1,000,000 in the Quantity_sold column?
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Answer: C
Explanation
C. Logical functions would be appropriate to flag “Yes” for every salesperson who has a number above 1,000,000 in the Quantity_sold column. Logical functions in data analysis are used to make decisions based on a set of conditions. In this case, the analyst can use a logical function such as an IF statement, where the condition is that the salesperson's Quantity_sold is above 1,000,000. If the condition is met, then the Promotion_flag is set to “Yes,” otherwise it is set to “No.” For example, the formula could be something like: IF(Quantity_sold > 1000000, "Yes", "No") This formula would then be applied to the entire column of Quantity_sold values, and the resulting Promotion_flag column would indicate whether each salesperson is eligible for a promotion based on the number of items they have sold. Logical functions are an essential tool in data analysis, as they allow analysts to make decisions based on specific criteria and automate certain processes in the data analysis process.
Source: Adapted from community discussion — ronniehaang
Question 214 · 365 in bank
A data analyst needs to create a dashboard using the company’s yearly revenue data sets. Which of the following would be the best way to plot the information to show the top performing region?
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Answer: D
Question 215 · 365 in bank
A data engineer is creating a database field to capture whether a customer likes vanilla ice cream. Which of the following data types is the best to capture this information?
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Answer: B
Question 216 · 365 in bank
The duration of a phone call in milliseconds is an example of:
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Answer: D
Question 217 · 365 in bank
A data analyst has a set of data that shows the number of gallons of oil produced each day. The company would like to know the standard deviation for the data set. The variance for the data is 36 gallons. Which of the following is the standard deviation for gallons produced?
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Answer: B
Question 218 · 365 in bank
Under which of the following circumstances should the null hypothesis be accepted when α = 0.05?
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Answer: D
Question 219 · 365 in bank
Which of the following is the first step an analyst should perform upon receiving a business request for analysis?
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Answer: C
Question 220 · 365 in bank
Select 2An analyst needs to summarize the number of people in Chicago in 2022 using the following set of data:
Which of the following steps should the analyst use to provide results? (Choose two.)
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Answer: AC
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