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 significance 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 difference between a positive trend and a negative trend.

Back

A positive trend indicates an increase in data values over time, while a negative trend indicates a decrease.

Front

What is a scatter plot and how is it used in trend analysis?

Back

A scatter plot is a graph that displays values for typically two variables for a set of data. It is used to observe relationships and trends between the variables.

Front

What does it mean if data points in a scatter plot form a linear pattern?

Back

If data points form a linear pattern, it indicates a consistent relationship between the two variables, which can be described by a linear equation.

Front

Define 'correlation' in the context of trends.

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 purpose of a trend line in data analysis?

Back

A trend line is a straight line that best represents the data on a scatter plot, helping to visualize the overall direction of the data points.

Front

How can outliers affect trend analysis?

Back

Outliers can skew the results of trend analysis, leading to misleading conclusions about the overall trend.

Front

What is the role of data collection in identifying trends?

Back

Data collection is crucial for identifying trends as it provides the necessary information to analyze patterns and make predictions.