5.3 Scatterplot Predictions

Front

What does the y-axis represent in a scatterplot?

Back

The y-axis typically represents the dependent variable, which is the outcome or result being measured, such as 'Amount Earned in Dollars'.

Front

What does the x-axis represent in a scatterplot?

Back

The x-axis usually represents the independent variable, which is the input or cause, such as 'Hours Worked'.

Front

How can you use a scatterplot to make predictions?

Back

You can use the trend line in a scatterplot to estimate values for the dependent variable based on given values of the independent variable.

Front

What is a trend line in a scatterplot?

Back

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

Front

If a scatterplot shows a positive correlation, what does that mean?

Back

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

Front

If a scatterplot shows a negative correlation, what does that mean?

Back

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

Front

What is the purpose of using scatterplots in data analysis?

Back

Scatterplots are used to visualize the relationship between two quantitative variables and to identify trends or patterns.

Front

How can you estimate the time it would take to run a certain distance using a scatterplot?

Back

You can find the point on the scatterplot that corresponds to the distance and read the estimated time from the y-axis.

Front

What is the significance of outliers in a scatterplot?

Back

Outliers are data points that differ significantly from other observations and can affect the trend line and overall analysis.

Front

How do you interpret the slope of a trend line in a scatterplot?

Back

The slope indicates the rate of change between the two variables; a steeper slope means a stronger relationship.