Data Exploration and Visualization Quiz 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

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

Bar chart

Scatter plot

Histogram

2 / 40

Which statistical measure describes the range of data values?

Variance

Standard deviation

Range

3 / 40

Which statistical measure describes the central value of a dataset?

Variance

Median

Standard deviation

4 / 40

What does a dendrogram show in data analysis?

Hierarchical clustering of variables or observations

Correlation between two variables

Central tendency of data

5 / 40

Which visualization technique is used for time series data?

Line chart

Scatter plot

Box plot

6 / 40

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

Showing the correlation matrix visually

Displaying histograms

Plotting scatter plots

7 / 40

What is the purpose of data aggregation in data exploration?

Summarizing data at a higher level

Sorting data

Visualizing data

8 / 40

Which visualization technique is used for geographical data?

Box plot

Choropleth map

Histogram

9 / 40

What is dimensionality reduction used for in data exploration?

Sorting data

Imputing missing values

Reducing the number of variables while preserving important information

10 / 40

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

Histogram

Bar chart

Box plot

11 / 40

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

Line chart

Heat map

3D Scatter plot

12 / 40

What is the purpose of data sampling in data exploration?

Sorting data

Imputing missing values

Extracting a subset of data for analysis

13 / 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

14 / 40

What is data exploration used for?

Preprocessing data

Discovering patterns and trends in data

Training models

15 / 40

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

Histogram

Scatter plot

Box plot

16 / 40

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

Mean

Variance

Median

17 / 40

Which visualization technique is used for showing trends over time?

Scatter plot

Bar chart

Line chart

18 / 40

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

Mean

Standard deviation

Median

19 / 40

What is outlier detection used for in data exploration?

Grouping data

Sorting data

Identifying data points that deviate from the norm

20 / 40

What is correlation analysis used for in data exploration?

Imputing missing values

Assessing the strength of the relationship between variables

Sorting data

21 / 40

What is the purpose of feature engineering in data exploration?

Creating new features from existing data

Sorting data

Imputing missing values

22 / 40

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

Count

Mean

Standard deviation

23 / 40

Which visualization technique is used for exploring categorical data?

Box plot

Bar chart

Histogram

24 / 40

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

Scatter plot

Box plot

Bar chart

25 / 40

What does a pie chart show in data visualization?

Correlation between two variables

Proportional representation of categories in a whole

Distribution of a numerical variable

26 / 40

What does a scatter plot matrix visualize?

Time series data

Distribution of a single variable

Pairwise relationships between multiple variables

27 / 40

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

Imputing missing values

Providing insights into data patterns and relationships

Sorting data

28 / 40

Which technique is used for handling missing data?

Imputation

Scaling

Normalization

29 / 40

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

Central tendency

Spread of data

Skewness

30 / 40

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

Showing pairwise correlations between variables

Imputing missing values

Sorting data

31 / 40

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

Normalization

Encoding

Imputation

32 / 40

What does a violin plot show in data visualization?

Correlation between two variables

Central tendency of data

Distribution of a numerical variable across different categories

33 / 40

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

Bar chart

Histogram

Scatter plot

34 / 40

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

Understanding the data before applying formal statistical methods

Imputing missing values

Training models

35 / 40

What is the purpose of data preprocessing in data analysis?

Visualizing data

Cleaning and transforming data

Model evaluation

36 / 40

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

Plotting time series data

Visualizing pairwise correlations between numerical variables

Displaying hierarchical clustering

37 / 40

What does a box plot show?

Summary of a numerical variable's distribution

Correlation between two variables

Frequency of categorical variables

38 / 40

What is the purpose of data transformation in data exploration?

Modifying the data to improve model performance

Imputing missing values

Sorting data

39 / 40

Which visualization technique is used to display hierarchical data structures?

Line chart

Tree map

Scatter plot

40 / 40

What does skewness measure in data distribution?

Asymmetry of the distribution

Central tendency

Spread of data

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