Scatterplots Pre Assessment

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 the line of best fit represent in a scatterplot?

Back

The line of best fit represents the trend of the data points in a scatterplot, indicating the general direction of the relationship between the variables.

Front

What is correlation in the context of scatterplots?

Back

Correlation refers to the strength and direction of a relationship between two variables, which can be positive, negative, or none.

Front

What does a positive correlation indicate?

Back

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

Front

What does a negative correlation indicate?

Back

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

Front

What does no correlation mean in a scatterplot?

Back

No correlation means there is no discernible relationship between the two variables; changes in one do not affect the other.

Front

How can you determine the line of best fit visually?

Back

The line of best fit can be determined visually by drawing a line that best represents the trend of the data points, minimizing the distance from the points to the line.

Front

What is the purpose of making predictions using a scatterplot?

Back

The purpose of making predictions using a scatterplot is to estimate the value of one variable based on the known value of another variable.

Front

What is an example of a positive correlation in real life?

Back

An example of a positive correlation is the relationship between hours studied and test scores; generally, more study time leads to higher scores.

Front

What is an example of a negative correlation in real life?

Back

An example of a negative correlation is the relationship between the amount of exercise and body weight; typically, more exercise leads to lower body weight.