Question
In the context of the data analysis process, what is the
main purpose of the "modeling" stage?Solution
The "modeling" stage in the data analysis process refers to the application of statistical, machine learning, or other analytical methods to make predictions or discover patterns in the data. During this phase, analysts typically build models using the cleaned and transformed data, applying techniques like regression analysis, clustering, or decision trees to extract insights or predict future trends. The goal of modeling is to provide actionable insights based on data patterns, which can guide business decisions or strategies. This stage is crucial for developing predictive analytics models or understanding correlations in the data. Option A (To clean and preprocess raw data) is incorrect because cleaning and preprocessing are part of the earlier stages of data analysis. Option B (To visualize the data through charts and graphs) is important for communication but occurs after modeling, not during the modeling phase. Option D (To create dashboards for reporting) is part of the later steps in the data analysis process, primarily after the modeling and interpretation of results. Option E (To gather data from various sources) is part of the "data collection" phase, which happens before modeling.
Individuals A and B have their incomes in the ratio of 5 to 3, while the ratio of their expenditures stands at 3 to 4, respectively. A saves Rs. 43,000 ...
In a department 20% of the employees are females. 40% of the male employees know Hindi. The total number of employees who know Hindi is 46%. Find the pe...
In a school, 60% of the students pass and 30 fail. The number of students appearing from another school is 25 more and 20 more students pass than the fo...
40% students (boys + girls) in a science class are boys. Out of total boys, 60% are literate and 120 are illiterate. Find the number of literate girls i...
A teacher distributes 300 toffees among her 4 students, A, B, C and D. A gets x% of total toffees, B receives 2x% of the remaining toffees, C receives (...
The current population of a city is 50,000. If the population of males increases by 4% and the population of females increases by 6%, the total populati...
A quantity is increased by 60% at first, and later decreased by 45%. Calculate the net percentage change.
'P' allocates 25% of his income to rent and then spends 40% of the remaining amount on food and travel. After these expenses, he spends Rs. 5600 on misc...
Akshay, Vishal and Dipak purchased 2, 20 and 50 notebooks for a total of Rs 16, Rs 140 and Rs 400 respectively from a stationery shop. In his transactio...
In a colony, there are 20 APL families and 30 BPL families. Each APL and BPL family got blankets equal to 30% and 60%, respectively of total number of f...