Scatterplots

Front

What is a scatterplot?

Back

A scatterplot is a graph that displays values for typically two variables for a set of data. Each point on the graph represents an observation.

Front

What does a positive association in a scatterplot indicate?

Back

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

Front

What does a negative association in a scatterplot indicate?

Back

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

Front

What is a trend line in a scatterplot?

Back

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

Front

How can you use a scatterplot to make predictions?

Back

You can use a trend line to estimate the value of one variable based on the value of another variable.

Front

What is the formula to calculate the probability of an event?

Back

The probability of an event is calculated as the number of favorable outcomes divided by the total number of possible outcomes.

Front

If there are 4 yellow, 6 orange, 2 brown, 3 green, and 5 blue M&Ms, what is the total number of M&Ms?

Back

The total number of M&Ms is 20.

Front

What is the probability of selecting a brown M&M from a bowl containing 20 M&Ms?

Back

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 greater change.

Front

What does it mean if a scatterplot has no association?

Back

It means there is no discernible pattern or relationship between the two variables.