#1
Which of the following types of charts is best suited for showing trends over time?
Pie chart
Bar chart
Line chart
Scatter plot
#2
What does 'CSV' stand for in the context of data analysis?
Common Separated Values
Comma-Separated Values
Centralized System Values
Computer Science Values
#3
Which of the following is NOT a commonly used data visualization tool?
Matplotlib
Tableau
Seaborn
NumPy
#4
What does a 'histogram' display?
Frequency distribution of categorical data
Relationship between two continuous variables
Distribution of a single continuous variable
Distribution of a single categorical variable
#5
What is the purpose of a 'heat map' in data visualization?
To display spatial data
To show hierarchical relationships
To represent data values using colors
To compare frequency distributions
#6
Which statistical test is used to determine if there is a significant difference between the means of two independent groups?
Chi-square test
T-test
ANOVA
Regression analysis
#7
Which statistical measure best describes the 'average' value of a dataset?
Median
Mode
Mean
Standard deviation
#8
What does the 'box' in a box plot represent?
Maximum and minimum values
First and third quartiles
Median
Standard deviation
#9
What is the purpose of 'ANOVA' (Analysis of Variance) in statistical analysis?
To compare means of multiple groups
To measure correlation between variables
To predict future trends
To perform clustering analysis
#10
What is the primary function of 'residual plots' in regression analysis?
To check for homoscedasticity
To visualize the relationship between variables
To identify outliers and influential data points
To assess the normality of residuals
#11
What does 'correlation coefficient' indicate about the relationship between two variables?
Strength and direction of the relationship
Probability of error in the relationship
Frequency of the relationship
Magnitude of the relationship
#12
In data analysis, what does the acronym 'IQR' stand for?
Interquartile Range
Internal Quality Rating
Interpolated Quantitative Regression
Index of Qualitative Rating
#13
In a statistical context, what does 'p-value' signify?
Probability of observing the given result by chance
Precision value
Percentage value
Predictive value
#14
Which type of chart is most suitable for displaying the distribution of a single continuous variable along with its probability density function?
Histogram
Box plot
Density plot
Scatter plot
#15
What is the primary use of a 'scatter plot' in data visualization?
To display the distribution of a single variable
To show the relationship between two variables
To compare multiple groups
To visualize hierarchical data
#16
Which of the following is a parametric statistical test?
Chi-square test
Mann-Whitney U test
Kruskal-Wallis test
Student's t-test
#17
Which type of chart is used to visualize the distribution of a categorical variable?
Histogram
Pie chart
Scatter plot
Box plot