Scatterplot Predictions

Front

What is a scatterplot?

Back

A scatterplot is a graphical representation of two variables where each point represents an observation in the dataset, showing the relationship between the variables.

Front

What does the line of best fit represent in a scatterplot?

Back

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

Front

What is correlation in the context of scatterplots?

Back

Correlation refers to the degree to which two variables move in relation to each other, which can be positive, negative, or no correlation.

Front

What is a positive correlation?

Back

A positive correlation occurs when an increase in one variable leads to an increase in another variable, represented by an upward slope in the scatterplot.

Front

What is a negative correlation?

Back

A negative correlation occurs when an increase in one variable leads to a decrease in another variable, represented by a downward slope in the scatterplot.

Front

What does 'no association' mean in a scatterplot?

Back

'No association' means that there is no discernible relationship between the two variables, and the points on the scatterplot are scattered randomly.

Front

How can you determine the type of correlation from a scatterplot?

Back

You can determine the type of correlation by observing the direction of the points: if they trend upwards, it's positive; if they trend downwards, it's negative; if they are scattered, there may be no correlation.

Front

What is the significance of outliers in a scatterplot?

Back

Outliers are data points that fall far from the trend of the rest of the data, which can affect the line of best fit and the overall interpretation of the correlation.

Front

What is the purpose of using a scatterplot in data analysis?

Back

The purpose of using a scatterplot is to visually assess the relationship between two quantitative variables and to identify patterns, trends, or correlations.

Front

What does it mean to predict a value using a scatterplot?

Back

Predicting a value using a scatterplot involves estimating the value of one variable based on the known value of another variable, often using the line of best fit.