2 Omar is analyzing sales data and finds that some entries have missing values. What step of data analysis should he perform first? A Data visualization B Data cleaning C Data interpretation D Data collection
4 Zara is creating a chart to show monthly temperature changes. Which data analysis step is she performing? A Data collection B Data cleaning C Data visualization D Data interpretation
5 Hani is storing names of students. Which data type is most appropriate? A Integer B Float C String D Boolean
6 In the context of Big Data, what does the characteristic 'Variety' refer to? A The speed at which data is created and processed. B The huge quantity or amount of data. C The different forms of data, such as text, images, and videos. D The trustworthiness and quality of the data.
7 Maya is analyzing stock market data that updates every millisecond. Which Big Data characteristic is most important here? A Volume B Velocity C Variety D Veracity
8 Hassan is working with a dataset that is too large for Excel to handle. This is an example of? A Volume B Velocity C Variety D Veracity
9 Mona is collecting data from sensors in a factory. The data is generated continuously. This relates to which Big Data characteristic? A Volume B Velocity C Variety D Veracity
10 Lina is using past sales data to forecast next month's revenue. What type of analysis is this? A Descriptive B Predictive C Prescriptive D Diagnostic
11 Nora is analyzing exam scores stored as percentages. Which data type is this? A Integer B Float C String D Boolean
12 Salem is working with a dataset that has both structured and unstructured data. This is called? A Multi-source data B Hybrid data C Semi-structured data D Complex data
13 What is the main purpose of data analysis? A To delete data B To organize information C To extract useful patterns D To store data
14 Ahmed has a dataset with 1 million rows. He wants to find the average age. What type of analysis is this? A Descriptive B Predictive C Prescriptive D Diagnostic
15 Nadia is using a histogram to show age distribution. What data type is age? A Categorical B Numerical C Boolean D Text
16 Sana is studying customer reviews to improve a product. The reviews are in text format. What type of data is she dealing with? A Structured data B Unstructured data C Semi-structured data D Numerical data
17 Hassan is working with a dataset that includes images, videos, and text. This variety is an example of which Big Data characteristic? A Volume B Velocity C Variety D Veracity
18 What is the role of data in decision making? A No role B Creates confusion C Provides evidence D Deletes choices
20 Ali is comparing two datasets: one is 10 GB and the other is 10 TB. Which term describes the larger dataset? A Small data B Big Data C Medium data D Micro data