SAT Data-Analysis4

Front

What is data analysis?

Back

Data analysis is the process of inspecting, cleansing, transforming, and modeling data to discover useful information, inform conclusions, and support decision-making.

Front

What are the key steps in data analysis?

Back

1. Data Collection 2. Data Cleaning 3. Data Exploration 4. Data Modeling 5. Data Interpretation

Front

Define 'mean' in statistics.

Back

The mean is the average of a set of numbers, calculated by adding all the numbers together and dividing by the count of numbers.

Front

What is a 'median'?

Back

The median is the middle value in a list of numbers sorted in ascending or descending order.

Front

Explain 'mode' in a data set.

Back

The mode is the value that appears most frequently in a data set.

Front

What is a 'range' in statistics?

Back

The range is the difference between the highest and lowest values in a data set.

Front

Define 'outlier'.

Back

An outlier is a data point that differs significantly from other observations in a data set.

Front

What is a 'scatter plot'?

Back

A scatter plot is a graph that uses dots to represent the values obtained for two different variables, showing the relationship between them.

Front

Explain the concept of 'correlation'.

Back

Correlation measures the strength and direction of a linear relationship between two variables.

Front

What does 'standard deviation' indicate?

Back

Standard deviation measures the amount of variation or dispersion in a set of values.