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Exploratory Data Analysis (EDA) MCQ Questions and Answers | Data Science MCQs

Explore our comprehensive collection of multiple-choice questions (MCQs) on Exploratory Data Analysis (EDA) designed to boost your confidence and knowledge in data science. These data science MCQs are essential for data science job interviews and exams. Page-2 section-1

11
In EDA, what is the purpose of a Q-Q plot (Quantile-Quantile plot)?
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Answer & Solution
Answer: Option C
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12
Which EDA technique is used to visualize the relationship between a categorical variable and a continuous variable?
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Answer & Solution
Answer: Option A
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13
What does the term "skewness" refer to in the context of data distribution analysis in EDA?
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Answer & Solution
Answer: Option A
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14
Which EDA technique is used to display the distribution of a single variable, especially in cases of categorical data?
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Answer & Solution
Answer: Option C
Solution:
Option A: Box Plot - A box plot is great for showing the distribution of numerical data, particularly to visualize quartiles, median, and outliers. It's not typically used for categorical data.

Option B: Scatter Plot - A scatter plot is used to show the relationship between two numerical variables. It plots data points on a graph to reveal trends and correlations. It's not suitable for visualizing the distribution of a single categorical variable.

Option C: Histogram - A histogram is used to display the distribution of numerical data by grouping it into bins. It shows how many data points fall within each bin. While useful, it's designed for numerical, not categorical, data.

Option D: Bar Chart - A bar chart is specifically designed to display the distribution of categorical data. Each bar represents a category, and the height of the bar shows the frequency (or count) of that category. This allows us to easily see which categories are most common.

Therefore, the correct answer is D: Bar Chart.
15
What is the primary goal of a density plot in EDA?
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Answer & Solution
Answer: Option A
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16
What is the primary purpose of a bar chart in EDA?
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Answer & Solution
Answer: Option C
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17
Which EDA technique is used to visualize the distribution of a single continuous variable?
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Answer & Solution
Answer: Option B
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18
In EDA, what does the term "box" represent in a box plot?
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Answer & Solution
Answer: Option A
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19
What does the term "kurtosis" refer to in the context of data distribution analysis in EDA?
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Answer & Solution
Answer: Option C
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20
In EDA, what is the primary purpose of a heat map?
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Answer & Solution
Answer: Option B
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