Data Exploration and Visualization MCQs With Answers

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Data Exploration and Visualization Online Quiz

By presenting 3 options to choose from, Data Exploration and Visualization Quiz which cover a wide range of topics and levels of difficulty, making them adaptable to various learning objectives and preferences. You will have to read all the given answers of Data Exploration and Visualization Questions and Answers and click over the correct answer.

• Test Name: Data Exploration and Visualization MCQ Quiz Practice
• Type: Quiz Test
• Total Questions: 40
• Total Marks: 40
• Time: 40 minutes

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Data Exploration and Visualization Quiz

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1 / 40

What does a cumulative distribution function (CDF) show?

Distribution of categorical data

Scatter plot

Probability that a random variable is less than or equal to a certain value

2 / 40

What is correlation analysis used for in data exploration?

Assessing the strength of the relationship between variables

Sorting data

Imputing missing values

3 / 40

What is the purpose of data transformation in data exploration?

Imputing missing values

Sorting data

Modifying the data to improve model performance

4 / 40

Which type of plot is suitable for visualizing the relationship between two numerical variables?

Box plot

Scatter plot

Histogram

5 / 40

What is the purpose of feature engineering in data exploration?

Sorting data

Imputing missing values

Creating new features from existing data

6 / 40

Which type of plot is used to visualize the relationship between a categorical and a numerical variable?

Box plot

Bar chart

Scatter plot

7 / 40

What does a violin plot show in data visualization?

Distribution of a numerical variable across different categories

Correlation between two variables

Central tendency of data

8 / 40

Which type of plot is used to visualize the relationship between three variables?

Line chart

3D Scatter plot

Heat map

9 / 40

Which statistical measure describes the variability of data points around the mean?

Median

Variance

Mean

10 / 40

Which visualization technique is used to display hierarchical data structures?

Line chart

Scatter plot

Tree map

11 / 40

What is dimensionality reduction used for in data exploration?

Imputing missing values

Reducing the number of variables while preserving important information

Sorting data

12 / 40

What is data exploration used for?

Discovering patterns and trends in data

Preprocessing data

Training models

13 / 40

Which technique is used for scaling numerical variables to a standard range?

Encoding

Normalization

Imputation

14 / 40

Which type of plot is suitable for comparing the distribution of a numerical variable across categories?

Histogram

Box plot

Bar chart

15 / 40

Which visualization technique is used for geographical data?

Choropleth map

Histogram

Box plot

16 / 40

What is the purpose of a correlation matrix in data analysis?

Sorting data

Showing pairwise correlations between variables

Imputing missing values

17 / 40

What is the purpose of data sampling in data exploration?

Extracting a subset of data for analysis

Imputing missing values

Sorting data

18 / 40

Which statistical measure describes the tendency of data to cluster around a central value?

Central tendency

Spread of data

Skewness

19 / 40

Which type of plot is used to display the frequency of categorical variables?

Histogram

Bar chart

Scatter plot

20 / 40

Which statistical measure describes the frequency of values in a dataset?

Standard deviation

Count

Mean

21 / 40

Which statistical measure describes the spread of data around the mean?

Mean

Standard deviation

Median

22 / 40

What is the purpose of data preprocessing in data analysis?

Model evaluation

Visualizing data

Cleaning and transforming data

23 / 40

What is the purpose of exploratory data analysis (EDA)?

Imputing missing values

Training models

Understanding the data before applying formal statistical methods

24 / 40

What does skewness measure in data distribution?

Asymmetry of the distribution

Central tendency

Spread of data

25 / 40

What is the purpose of data aggregation in data exploration?

Sorting data

Summarizing data at a higher level

Visualizing data

26 / 40

What is the purpose of data visualization in exploratory data analysis?

Sorting data

Imputing missing values

Providing insights into data patterns and relationships

27 / 40

Which type of plot is used to visualize the distribution of a numerical variable?

Histogram

Scatter plot

Bar chart

28 / 40

Which statistical measure describes the central value of a dataset?

Standard deviation

Median

Variance

29 / 40

What does a box plot show?

Summary of a numerical variable's distribution

Correlation between two variables

Frequency of categorical variables

30 / 40

Which statistical measure describes the range of data values?

Standard deviation

Variance

Range

31 / 40

What does a scatter plot matrix visualize?

Time series data

Distribution of a single variable

Pairwise relationships between multiple variables

32 / 40

Which visualization technique is used for exploring categorical data?

Histogram

Bar chart

Box plot

33 / 40

What is the purpose of a correlation heatmap in data visualization?

Visualizing pairwise correlations between numerical variables

Plotting time series data

Displaying hierarchical clustering

34 / 40

What does a pie chart show in data visualization?

Proportional representation of categories in a whole

Correlation between two variables

Distribution of a numerical variable

35 / 40

Which technique is used for handling missing data?

Scaling

Normalization

Imputation

36 / 40

What is outlier detection used for in data exploration?

Grouping data

Identifying data points that deviate from the norm

Sorting data

37 / 40

What does a dendrogram show in data analysis?

Central tendency of data

Hierarchical clustering of variables or observations

Correlation between two variables

38 / 40

What is the purpose of a heat map in data visualization?

Showing the correlation matrix visually

Plotting scatter plots

Displaying histograms

39 / 40

Which visualization technique is used for time series data?

Line chart

Scatter plot

Box plot

40 / 40

Which visualization technique is used for showing trends over time?

Bar chart

Line chart

Scatter plot

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