An analyst wants to determine whether a data set has errors and outliers in the variables. Which of the following types of analysis should the analyst perform?

The correct answer is D. Exploratory. Exploratory Data Analysis (EDA) is the initial phase of data analysis where an analyst examines a dataset to discover patterns, spot anomalies, check assumptions, and identify errors and outliers. It uses statistical summaries and visualizations to understand the data before…

Data Analysis

Question

Options

APredictive
BRegression
CPrescriptive
DExploratory

How the community answered

(48 responses)

A
2% (1)
B
8% (4)
C
2% (1)
D
88% (42)

Explanation

Exploratory Data Analysis (EDA) is the initial phase of data analysis where an analyst examines a dataset to discover patterns, spot anomalies, check assumptions, and identify errors and outliers. It uses statistical summaries and visualizations to understand the data before formal modeling. Predictive analysis forecasts future outcomes; regression quantifies relationships between variables; prescriptive analysis recommends actions - none of these focus on surfacing data quality issues.

Topics

#Exploratory data analysis#Data quality#Outlier detection#Data errors

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