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Which of the following data sampling methods involves dividing a population into subgroups by similar characteristics?
Which of the following data sampling methods involves dividing a population into subgroups by similar characteristics?A . SystematicB . Simple randomC . ConvenienceD . StratifiedView AnswerAnswer: D Explanation: Stratified sampling is a data sampling method that involves dividing a population into subgroups by similar characteristics, such as age, gender, income,...
Which of the following is the FIRST step the analyst should perform with the data?
An analyst needs to conduct a quick analysis. Which of the following is the FIRST step the analyst should perform with the data?A . Conduct an exploratory analysis and use descriptive statistics.B . Conduct a trend analysis and use a scatter chart.C . Conduct a link analysis and illustrate the...
Which of the following HTML commands would help the developer to complete the task successfully?
A junior web developer is developing a new application where users can upload short videos. The first task is to create a homepage that shows the headline "Upload Your Short Videos" and a clickable button that says "upload now". Which of the following HTML commands would help the developer to...
Which of the following data manipulation techniques should the analyst perform?
A data analyst must separate the column shown below into multiple columns for each component of the name: Which of the following data manipulation techniques should the analyst perform?A . ImputingB . TransposingC . ParsingD . ConcatenatingView AnswerAnswer: C Explanation: Parsing is the data manipulation technique that should be used...
Which of the following would be used to store unstructured data from different sources?
Which of the following would be used to store unstructured data from different sources?A . A data lakeB . A database management systemC . A databaseD . A data warehouseView AnswerAnswer: A Explanation: This is because a data lake is a type of storage system that stores unstructured data from...
Consider this dataset showing the retirement age of 11 people, in whole years:
Consider this dataset showing the retirement age of 11 people, in whole years: 54, 54, 54, 55, 56, 57, 57, 58, 58, 60, 60 This tables show a simple frequency distribution of the retirement age data. A . 56B . 55C . 57D . 54View AnswerAnswer: D Explanation: A measure...
Which of the following data cleansing issues will be fixed when a DISTINCT function is applied?
Which of the following data cleansing issues will be fixed when a DISTINCT function is applied?A . Missing dataB . Duplicate dataC . Redundant dataD . Invalid dataView AnswerAnswer: B Explanation: This is because duplicate data refers to data that is repeated or copied in a data set, which can...
Which of the following describes the number of rows of data that can be expected after performing both joins in the order stated, considering the customer table as the main table?
A data analyst has been asked to merge the tables below, first performing an INNER JOIN and then a LEFT JOIN: Customer Table - In-store Transactions C Which of the following describes the number of rows of data that can be expected after performing both joins in the order stated,...
Which of the following contains alphanumeric values?
Which of the following contains alphanumeric values?A . 10.1Ε²B . 13.6C . 1347D . A3J7View AnswerAnswer: D Explanation: Alphanumeric values are values that contain both letters and numbers, such as A3J7. The other options are numeric values, as they contain only numbers, such as 10.1E2, 13.6, and 1347. Reference: Guide...
Which of the following types of charts should be considered to BEST display the data?
An analyst is designing a dashboard to determine which site has the highest percentage of new customers. The analyst must choose an appropriate chart to include in the dashboard. The following data is available: Which of the following types of charts should be considered to BEST display the data?A ....
