Question
In exploratory data analysis (EDA), which of the
following is the primary goal?Solution
The main goal of Exploratory Data Analysis (EDA) is to visually and statistically summarize the data in order to understand its structure, patterns, and anomalies. By applying various visualization techniques (such as histograms, scatter plots, and box plots) and descriptive statistics (like mean, median, and standard deviation), EDA helps data analysts gain insights into the relationships and trends within the dataset before performing more formal statistical modeling or hypothesis testing. EDA is used to identify missing data, detect outliers, and explore the distribution of variables. It does not aim to test hypotheses or build models directly; instead, it prepares the data for such further analysis. Why Other Options Are Incorrect: • A: Testing the statistical significance of a dataset is typically done after performing EDA, especially in hypothesis testing or when applying inferential statistics. • C: Developing predictive models happens after understanding the data through EDA. Models are created based on insights gained from exploratory analysis. • D: Reporting findings is a task typically performed at the end of the data analysis process, not at the start during EDA. • E: Ensuring the data adheres to industry standards is more related to data quality and preparation than to the purpose of EDA, which is focused on exploration and analysis.
ABCD is a cyclic quadrilateral, such that ratio of measures ∠A, ∠B and ∠C is 1 : 4 : 5, then the measure of ∠D is.
Determine the slant height of a cone with a volume of 1,884 cm³ and a base radius of 15 cm. (Use π = 3.14)
Each side of a rhombus is 20cm long and the length of one of its diagonals is 24cm, then find the area of the rhombus.(in cm 2 )
A cuboidal water tank with dimensions 32 metres × 22 metres × 28 metres is filled to 40% of its total capacity . The water is then transferred to a cy...
A horse is tethered to a peg with a 28 metre long repeat the corner of a 45 metre long and 25 metre wide rectangular grassfield. What area of field does...
The area of a square is 2116 square metres. The breadth of a rectangle is half of the side of the square and the length of the rectangle is thrice its b...
In a rectangular floor of length and breadth of 22 metres and 16 metres, respectively, square tiles each of 2 metre edge length are to be laid. If the c...
Curved surface area of a cylinder is 440 cm². The base circumference is 44 cm. What is its volume?
PQRS is a cyclic trapezium where PQ is parallel to RS and PQ is the diameter. If ∠QPR = 40° then the ∠PSR is equal to:
- The inner radius of a cylindrical shell is 9.5 cm. If the length of the shell and the thickness of the shell are 10 cm and 4 cm, respectively, find the app...