8 Making Predictions (8.SP.A.3) 4/14

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 grid.

Front

How can you use a scatterplot to make predictions?

Back

You can use a scatterplot to make predictions by identifying trends or patterns in the data points and using them to estimate values for unmeasured data.

Front

What does the slope of a trend line represent?

Back

The slope of a trend line represents the rate of change between the two variables being compared.

Front

What is a trend line?

Back

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

Front

How do you interpret the y-intercept of a trend line?

Back

The y-intercept of a trend line is the value of the dependent variable when the independent variable is zero.

Front

What is the purpose of making predictions in statistics?

Back

The purpose of making predictions in statistics is to estimate unknown values based on known data.

Front

If a baseball team practices for 3 hours a week and the trend line predicts they will win 13 games, what does this imply?

Back

This implies that there is a positive correlation between practice hours and the number of games won.

Front

How do you determine the number of pages in a book based on chapters using a scatterplot?

Back

You can determine the number of pages by locating the number of chapters on the x-axis and finding the corresponding value on the y-axis using the trend line.

Front

What is the relationship between the number of chapters and total pages in a book?

Back

Typically, there is a positive correlation where more chapters usually mean more pages.

Front

What does it mean if the trend line is steep?

Back

A steep trend line indicates a strong relationship between the two variables, meaning small changes in one variable result in large changes in the other.