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

Scatter plots display individual data points along two continuous axes, making correlations and clusters visible.

Question 2

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

Accepted Answer

The tail extends toward higher values

Answer

Right-skewed (positively skewed) distributions have a longer tail on the right side, meaning most values cluster at lower ranges with some extreme high values.

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

The IQR captures the range between the 25th and 75th percentiles, representing the central spread of the data.

Question 4

Which technique helps identify multicollinearity among features during exploratory analysis?

Accepted Answer

Correlation heatmap

Answer

A correlation heatmap visualizes pairwise correlations between all features, making it easy to spot highly correlated variable pairs.

Question 5

What does a bimodal distribution suggest about the underlying data?

Accepted Answer

The data likely contains two distinct subgroups

Answer

A bimodal distribution with two peaks typically indicates the presence of two overlapping subpopulations within the dataset.

MS-DS Master of Data science Practice Test

MS-DS Master of Data science Practice Test

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