MS-DS Master of Data science MS-DS Master of Data science Exploratory Data Analysis Questions and Answers 2

Question 1

Which visualization is most appropriate for examining the relationship between two continuous variables in exploratory data analysis?

Accepted Answer

Scatter plot

Answer

Bar chart

Answer

Pie chart

Answer

Treemap

Question 2

What does a right-skewed distribution indicate about the data?

Accepted Answer

The tail extends toward higher values

Answer

The tail extends toward lower values

Answer

The data is perfectly symmetric

Answer

The data has no outliers

Question 3

In EDA, what is the primary purpose of computing the interquartile range (IQR)?

Accepted Answer

To measure the spread of the middle 50% of data

Answer

To calculate the mean of the dataset

Answer

To determine the mode of the distribution

Answer

To normalize the data for modeling

Question 4

Which technique helps identify multicollinearity among features during exploratory analysis?

Accepted Answer

Correlation heatmap

Answer

Histogram

Answer

QQ plot

Answer

Run chart

Question 5

What does a bimodal distribution suggest about the underlying data?

Accepted Answer

The data likely contains two distinct subgroups

Answer

The data follows a normal distribution

Answer

All values are equally probable

Answer

The dataset has too many missing values

Question 6

When performing EDA on a dataset with 50 features, which method efficiently reduces dimensionality for visualization?

Accepted Answer

Principal Component Analysis (PCA)

Answer

Simple linear regression

Answer

Chi-square test

Answer

ANOVA