Unit 7 Statistics Review for Test

Front

What is a scatter plot?

Back

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

Front

What does a positive linear relationship indicate in a scatter plot?

Back

A positive linear relationship indicates that as one variable increases, the other variable also increases.

Front

What does a negative linear relationship indicate in a scatter plot?

Back

A negative linear relationship indicates that as one variable increases, the other variable decreases.

Front

What is an outlier in a data set?

Back

An outlier is a data point that differs significantly from other observations in a dataset, often appearing far away from the trend.

Front

What is the line of best fit?

Back

The line of best fit is a straight line that best represents the data on a scatter plot, showing the general direction of the data.

Front

How do you interpret the slope of a linear equation?

Back

The slope indicates the rate of change of the dependent variable with respect to the independent variable.

Front

What does the y-intercept represent in a linear equation?

Back

The y-intercept represents the value of the dependent variable when the independent variable is zero.

Front

What is the formula for a linear function?

Back

The formula for a linear function is typically written as y = mx + b, where m is the slope and b is the y-intercept.

Front

How can you determine if there is a relationship between two variables using a scatter plot?

Back

You can determine if there is a relationship by observing the pattern of the data points; if they form a recognizable pattern, a relationship may exist.

Front

What does it mean if a scatter plot shows no relationship?

Back

If a scatter plot shows no relationship, the data points are scattered randomly, indicating that changes in one variable do not affect the other.