Data Analysis with Scatter Plots

What is a scatter plot?

• A type of graph that shows how much something costs.

• A graph that uses dots to represent the values obtained for two different variables.

• A graph that shows data over a period of time.

• A graph that compares parts of a whole.

What can you analyze from a scatter plot?

• The relationship between two variables.

• The exact value of a variable.

• The favorite color of most people.

• The number of pets each person has.

What does each dot on a scatter plot represent?

• A color.

• A number.

• A pair of values.

• A type of animal.

If the dots on a scatter plot are close to a line that goes up from left to right, what does it suggest about the relationship between the two variables?

• There is no relationship.

• There is a negative relationship.

• There is a positive relationship.

• The variables are unrelated.

What might a scatter plot with dots scattered very randomly suggest?

• A strong relationship between the variables.

• No relationship between the variables.

• A perfect relationship between the variables.

• The variables are the same.

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What is one reason to use a scatter plot?

• To show how variables are unrelated.

• To predict the outcome of one variable based on another.

• To show data in alphabetical order.

• To count the number of data points.

What type of variables are best analyzed with a scatter plot?

• Unrelated variables.

• Categorical variables.

• Numerical variables.

• Fixed variables.

What does a downward sloping line in a scatter plot indicate about the relationship between two variables?

• Positive correlation.

• Negative correlation.

• No correlation.

• Perfect correlation.

How can you tell if a scatter plot shows a strong correlation between two variables?

• The dots are spread out over the entire graph.

• The dots form a clear line.

• The dots are all the same color.

• The dots form a circle.

What should you do first when creating a scatter plot?

• Draw the dots.

• Decide which variable goes on each axis.

• Color the graph.

• Write the title.