Scatter Plots Review

Front

What is a scatter plot?

Back

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

Front

What does a trend line represent in a scatter plot?

Back

A trend line represents the general direction or pattern of the data points in a scatter plot, helping to visualize the relationship between the variables.

Front

How can you use a trend line to make predictions?

Back

You can use a trend line to estimate the value of one variable based on the value of another by finding where the trend line intersects with the desired value.

Front

What is a line of best fit?

Back

A line of best fit is a straight line that best represents the data points in a scatter plot, minimizing the distance between the line and all the points.

Front

What type of correlation indicates that as one variable increases, the other also increases?

Back

Positive correlation.

Front

What type of correlation indicates that as one variable increases, the other decreases?

Back

Negative correlation.

Front

What does it mean if there is no correlation between two variables?

Back

It means that there is no predictable relationship between the two variables; changes in one do not affect the other.

Front

How do you determine the slope of a line in a scatter plot?

Back

The slope is determined by the change in the y-values divided by the change in the x-values between two points on the line.

Front

What is the purpose of using scatter plots in data analysis?

Back

Scatter plots are used to visually assess relationships between variables, identify trends, and make predictions.

Front

If a scatter plot shows a positive correlation, what can you infer about the relationship between the variables?

Back

You can infer that as one variable increases, the other variable tends to increase as well.