Unit 4 PT Trends

Front

What is a trend in the context of data analysis?

Back

A trend is a general direction in which something is developing or changing, often identified through patterns in data over time.

Front

Define 'PT' in the context of Unit 4 PT Trends.

Back

'PT' stands for 'Physical Training', which refers to the systematic practice of physical exercises to improve fitness and performance.

Front

What is the importance of identifying trends in data?

Back

Identifying trends helps in making informed decisions, predicting future outcomes, and understanding the underlying patterns in data.

Front

Explain the concept of 'data visualization'.

Back

Data visualization is the graphical representation of information and data, using visual elements like charts, graphs, and maps to make data easier to understand.

Front

What is a scatter plot and how is it used?

Back

A scatter plot is a graph that uses dots to represent the values obtained for two different variables, helping to identify relationships or correlations between them.

Front

What does a positive trend indicate in a graph?

Back

A positive trend indicates that as one variable increases, the other variable also increases, showing a direct relationship.

Front

What is a negative trend?

Back

A negative trend indicates that as one variable increases, the other variable decreases, showing an inverse relationship.

Front

Define 'correlation' in data analysis.

Back

Correlation is a statistical measure that describes the extent to which two variables change together, indicating the strength and direction of their relationship.

Front

What is the difference between correlation and causation?

Back

Correlation indicates a relationship between two variables, while causation implies that one variable directly affects the other.

Front

Explain the term 'outlier' in data sets.

Back

An outlier is a data point that differs significantly from other observations in a dataset, which can skew results and affect trends.