What is the primary goal of data interpretation?
Data interpretation involves analyzing raw data to extract meaningful insights and support decision-making.
Which of the following is NOT a common data visualization tool?
Data visualization tools help represent data in graphical formats for better understanding.
What does a 'histogram' represent in data analysis?
A histogram displays the distribution of numerical data by dividing it into bins.
What is the purpose of 'regression analysis' in data interpretation?
Regression analysis helps determine the relationship between dependent and independent variables.
Which measure of central tendency is most affected by outliers?
Outliers can skew the mean, while median and mode are less affected.
What does a 'scatter plot' primarily show?
Scatter plots visualize the relationship between two numerical variables.
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Which statistical test is used to compare means between two groups?
The t-test assesses whether the means of two groups are statistically different.
What is 'data cleaning' in data analysis?
Data cleaning involves removing errors, inconsistencies, and missing values from datasets.
What does 'standard deviation' measure in a dataset?
Standard deviation quantifies the amount of variation or dispersion in data.