Data Analysis Quiz

What is Data Analysis?

• The process of collecting data

• The process of inspecting, cleaning, transforming, and modeling data

• The process of creating data

• The process of deleting data

What is the purpose of Data Cleaning?

• To visualize data

• To remove inaccuracies and inconsistencies from the data

• To analyze the data

• To create new data

Which of the following is a measure of central tendency?

• Mean

• Range

• Variance

• Standard deviation

In which type of analysis is correlation used?

• To find the relationship between two variables

• To visualize data

• To clean data

• To create data

What is the purpose of Exploratory Data Analysis (EDA)?

• To apply machine learning models

• To explore and summarize the main characteristics of the data

• To delete unimportant data

• To split the data into training and testing sets

Which of the following is NOT a type of data visualization?

• Bar chart

• Pie chart

• Histogram

• Sorting data

What is a key benefit of using a box plot in data analysis?

• It shows the distribution of data across several categories

• It displays the frequency of data

• It visualizes the spread and skewness of the data, along with outliers

• It represents the mean and standard deviation of the data

What is the purpose of a regression analysis?

• To predict the value of a dependent variable based on an independent variable

• To determine the mode of the dataset

• To clean and prepare data

• To compare means between groups

What does the term 'outlier' refer to in data analysis?

• A data point that significantly differs from other observations

• The most frequent value in a dataset

• The highest value in a dataset

• The median value of a dataset

Which type of graph is most suitable for showing the distribution of a dataset?

• Line graph

• Histogram

• Scatter plot

• Pie chart