DS MP4 Practice

What is the definition of 'data science' as per the learning material?

• The study of algorithms and systems to extract knowledge from data.

• The process of learning about the world using data and computation.

• The application of statistical methods to data analysis.

• The exploration and analysis of large data sets to discover patterns.

Which term is described as 'a file containing Python definitions and statements'?

• Library

• Module

• Package

• Documentation

What does the 'table.describe()' function do?

• Lists the data types used in each column.

• Prints the number of rows and columns.

• Lists the descriptive statistics for each column.

• Lists non-null values and memory usage info.

What is a 'package' in the context of Python programming?

• A single Python file with definitions and statements.

• A collection of related modules.

• A collection of data analysis tools.

• A type of data structure.

Which function would you use to view the data types used in each column of a DataFrame?

• table.info()

• table.describe()

• table.dtypes

• table.shape

What does the function 'table.head(num)' do in data analysis?

• Lists the last num rows of the table

• Lists the first num rows of the table

• Lists all rows from index a to index b

• Reverses the order of rows in the table

Which term describes a sequence of steps for processing and using data?

• Data cycle

• Quantitative data

• Qualitative data

• Series

What type of data can be divided into different categories?

• Quantitative data

• Qualitative data

• Series

• Variance

What is the measure of the average distance the data values are from the mean?

• Range

• Variance

• Standard deviation

• Interquartile range (IQR)

What does the term "first quartile" refer to in data analysis?

• The median of the entire data set

• The median of the first half of the data or the 25% point

• The average value of the data

• The point below which 75% of the data falls