Back
0

Exploratory Data Analysis

Description: This quiz covers the fundamental concepts and techniques used in Exploratory Data Analysis (EDA). Assess your understanding of data exploration, visualization, and statistical measures.
Number of Questions: 15
Created by:
Tags: exploratory data analysis data exploration data visualization statistical measures
Start the Quiz
Attempted 0/15 Correct 0 Score 0
‹
›

What is the primary goal of Exploratory Data Analysis (EDA)?

  1. To confirm a hypothesis

  2. To generate a predictive model

  3. To gain insights into data

  4. To perform statistical inference

Show answer
Correct Option: C
Explanation:

EDA aims to explore, understand, and summarize data to uncover patterns, trends, and relationships.

Which of the following is NOT a common EDA technique?

  1. Univariate analysis

  2. Bivariate analysis

  3. Multivariate analysis

  4. Hypothesis testing

Show answer
Correct Option: D
Explanation:

Hypothesis testing is a confirmatory data analysis technique, while EDA is primarily exploratory.

What type of plot is used to visualize the distribution of a single variable?

  1. Scatter plot

  2. Histogram

  3. Box plot

  4. Pie chart

Show answer
Correct Option: B
Explanation:

A histogram is a graphical representation of the distribution of data points along a continuous variable.

Which measure of central tendency is most sensitive to outliers?

  1. Mean

  2. Median

  3. Mode

  4. Range

Show answer
Correct Option: A
Explanation:

Mean is affected by extreme values, making it sensitive to outliers.

What is the purpose of a box plot?

  1. To show the distribution of data

  2. To compare multiple groups

  3. To identify outliers

  4. All of the above

Show answer
Correct Option: D
Explanation:

Box plots provide information about the distribution, comparison of groups, and identification of outliers.

Which measure of dispersion is used to calculate the average distance between data points and the mean?

  1. Variance

  2. Standard deviation

  3. Range

  4. Interquartile range

Show answer
Correct Option: B
Explanation:

Standard deviation measures the spread of data around the mean.

What is the purpose of a scatter plot?

  1. To show the relationship between two variables

  2. To compare multiple groups

  3. To identify outliers

  4. To visualize the distribution of data

Show answer
Correct Option: A
Explanation:

Scatter plots are used to explore the relationship between two quantitative variables.

Which type of EDA technique is used to summarize the main characteristics of a dataset?

  1. Univariate analysis

  2. Bivariate analysis

  3. Multivariate analysis

  4. Time series analysis

Show answer
Correct Option: A
Explanation:

Univariate analysis involves examining each variable individually to understand its distribution and characteristics.

What is the purpose of a pie chart?

  1. To show the distribution of data

  2. To compare multiple groups

  3. To identify outliers

  4. To visualize the relationship between two variables

Show answer
Correct Option: A
Explanation:

Pie charts are used to visualize the proportion of each category in a dataset.

Which measure of skewness is used to determine the symmetry of a distribution?

  1. Mean

  2. Median

  3. Mode

  4. Skewness coefficient

Show answer
Correct Option: D
Explanation:

Skewness coefficient measures the asymmetry of a distribution.

What is the purpose of a stem-and-leaf plot?

  1. To show the distribution of data

  2. To compare multiple groups

  3. To identify outliers

  4. To visualize the relationship between two variables

Show answer
Correct Option: A
Explanation:

Stem-and-leaf plots provide a visual representation of the distribution of data.

Which measure of kurtosis is used to determine the peakedness or flatness of a distribution?

  1. Mean

  2. Median

  3. Mode

  4. Kurtosis coefficient

Show answer
Correct Option: D
Explanation:

Kurtosis coefficient measures the peakedness or flatness of a distribution.

What is the purpose of a quantile-quantile (Q-Q) plot?

  1. To show the distribution of data

  2. To compare multiple groups

  3. To identify outliers

  4. To assess the normality of data

Show answer
Correct Option: D
Explanation:

Q-Q plots are used to assess whether a dataset follows a normal distribution.

Which type of EDA technique is used to explore the relationship between multiple variables?

  1. Univariate analysis

  2. Bivariate analysis

  3. Multivariate analysis

  4. Time series analysis

Show answer
Correct Option: C
Explanation:

Multivariate analysis involves examining the relationship between multiple variables simultaneously.

What is the purpose of a heatmap?

  1. To show the distribution of data

  2. To compare multiple groups

  3. To identify outliers

  4. To visualize the correlation between variables

Show answer
Correct Option: D
Explanation:

Heatmaps are used to visualize the correlation between multiple variables.

- Hide questions
ADVERTISEMENT

Find more quizzes from top tags

general knowledge
3615 Quizzes
119858 Questions
 technology
307 Quizzes
36705 Questions
 sports
963 Quizzes
19148 Questions
 history
1187 Quizzes
13475 Questions
 physics
598 Quizzes
13441 Questions
 biology
1160 Quizzes
12174 Questions
 science & technology
551 Quizzes
11015 Questions
 chemistry
490 Quizzes
9892 Questions
 maths
518 Quizzes
9324 Questions
 softskills
0 Quizzes
7131 Questions