Scatterplot and Trend lines Practice #2

Front

What is a scatterplot?

Back

A scatterplot is a graph that shows the relationship between two quantitative variables by displaying data points on a two-dimensional axis.

Front

What does a trend line represent in a scatterplot?

Back

A trend line is a straight line that best represents the data points in a scatterplot, indicating the general direction of the data.

Front

What does it mean if a scatterplot shows a positive correlation?

Back

A positive correlation means that as one variable increases, the other variable also tends to increase.

Front

What does it mean if a scatterplot shows a negative correlation?

Back

A negative correlation means that as one variable increases, the other variable tends to decrease.

Front

What does it indicate if there is no correlation in a scatterplot?

Back

No correlation indicates that there is no predictable relationship between the two variables.

Front

How can you determine the slope of a trend line?

Back

The slope of a trend line can be determined by calculating the change in the y-values divided by the change in the x-values between two points on the line.

Front

What is the purpose of using a trend line in data analysis?

Back

The purpose of using a trend line is to summarize the overall pattern of the data and make predictions based on that pattern.

Front

What is the formula for calculating the rate of growth?

Back

The rate of growth can be calculated using the formula: (Final Value - Initial Value) / Time.

Front

What does a linear relationship in a scatterplot look like?

Back

A linear relationship in a scatterplot appears as a straight line, indicating a consistent rate of change between the two variables.

Front

What is an example of a situation where a scatterplot might be used?

Back

A scatterplot might be used to analyze the relationship between study time and test scores among students.