Scatter Plots and Data Review

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 grid.

Front

What does a trend line represent in a scatter plot?

Back

A trend line is a straight line that best represents the data points in a scatter plot, indicating the general direction of the data.

Front

How can you use a trend line to make predictions?

Back

You can use a trend line to predict values by finding the corresponding y-value for a given x-value on the line.

Front

What is correlation in the context of scatter plots?

Back

Correlation describes the strength and direction of a relationship between two variables, which can be positive, negative, or none.

Front

What does a positive correlation indicate?

Back

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

Front

What does a negative correlation indicate?

Back

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

Front

What is relative frequency?

Back

Relative frequency is the ratio of the number of times an event occurs to the total number of events, often expressed as a percentage.

Front

How do you calculate the relative frequency of an event?

Back

Relative frequency = (Number of times the event occurs) / (Total number of events) x 100%.

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, minimizing the distance between the line and all data points.

Front

What is the equation of a line in slope-intercept form?

Back

The equation of a line in slope-intercept form is y = mx + b, where m is the slope and b is the y-intercept.