Discover the crucial first step in data analysis for the CompTIA DA0-001 certification exam. Learn how to approach your data and gain valuable insights through the right techniques and visualizations.
Table of Contents
Question
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 connection points.
D. Conduct an initial analysis and use a Pareto chart.
Answer
A. Conduct an exploratory analysis and use descriptive statistics.
Explanation
The first step the analyst should perform with the data is to conduct an exploratory analysis and use descriptive statistics (Option A).
Exploratory data analysis (EDA) is a critical initial step that helps the analyst understand the data’s structure, main characteristics, and potential relationships between variables. It involves examining the data visually and using summary statistics to gain insights into the dataset’s properties, such as central tendency, dispersion, and distribution.
Descriptive statistics, such as mean, median, mode, standard deviation, and variance, provide a quantitative summary of the data. These measures help the analyst comprehend the data’s key features and identify any outliers or anomalies that may require further investigation.
By conducting an exploratory analysis and using descriptive statistics, the analyst can quickly grasp the data’s nature, detect patterns, and formulate hypotheses for further analysis. This initial step lays the foundation for more advanced techniques, such as trend analysis, link analysis, or Pareto analysis, which may be performed later based on the insights gained from the exploratory phase.
CompTIA DA0-001 certification exam practice question and answer (Q&A) dump with detail explanation and reference available free, helpful to pass the CompTIA DA0-001 exam and earn CompTIA DA0-001 certification.