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Worksheets11-12
Total questions: 14
Worksheet time: 7mins
What is the process of examining, cleaning, transforming, and modeling data to discover useful information, draw conclusions, and support decision-making called?
Data storage
Data collection
Data visualization
Which statistical measure represents the middle value of a dataset and is not affected by extreme outliers?
Median
Mean
Mode
In data analysis, what does the acronym "EDA" stand for?
Excel Data Automation
Effective Data Assessment
Exploratory Data Analysis
Which data analysis technique involves finding patterns and relationships in data to make predictions about future outcomes?
Inferential statistics
Predictive analysis
Hypothesis testing
What is the term for the graphical representation of data using bars to compare values in different categories?
Bar chart
Line chart
Scatter plot
What is the primary goal of data analysis?
Extracting useful insights and information from data
Data collection
Data visualization
Which statistical measure represents the average of a dataset and is often used in data analysis?
Mean
Median
Mode
In data analysis, what does the term "correlation" refer to?
The strength and direction of a relationship between two variables
A type of data visualization chart
statistical test for hypothesis testing
Which data analysis technique is used to discover hidden patterns or groups within a dataset?
Descriptive statistics
Hypothesis testing
Clustering
What is the purpose of hypothesis testing in data analysis?
To determine if a particular assumption about a population is valid or not
To visualize data using charts and graphs
To discover relationships between variables
What is the first step in the data analysis process?
Creating data visualizations
Collecting data
Drawing conclusions
Which statistical measure is used to describe the central tendency of a dataset?
Range
Variance
Median
What is the term for a graphical representation of data that displays the distribution of values along a continuous scale?
Histogram
Pie chart
Bar chart
Which data analysis technique is used to identify patterns or relationships in data through machine learning algorithms?
Clustering analysis
Descriptive statistics
Inferential statistics
