Exploring Scatter Plots

What is the primary purpose of a scatter plot?

• To display data in a pie chart format

• To connect dots in a straight line

• To graph bivariate data without connecting the dots

• To create histograms

What does a positive correlation in a scatter plot indicate?

• Data points decrease from left to right

• Data points are randomly distributed

• No correlation between the variables

• Data points increase from left to right

What is an example of a negative correlation?

• The amount of rain and the number of umbrellas sold

• The number of pets you have and your weight

• The warmer the temperature, the fewer layers of clothes worn

• The more homework, the later you stay up

What might a scatter plot indicate if the data points form a downward trend from left to right?

• Cannot be determined

• Negative correlation

• No correlation

• Positive correlation

What does no correlation in a scatter plot look like?

• Data points increase from left to right

• Data points are scattered randomly

• Data points decrease from left to right

• Data points form a straight line

What is an example of data that would likely show no correlation on a scatter plot?

• Age and height

• Temperature and ice cream sales

• Study hours and test scores

• Weight and number of pets

What is the line of best fit also known as?

• Regression line

• Median line

• Axis line

• Correlation line

How can the line of best fit be used in scatter plots?

• To predict future data points

• To connect all the dots

• To measure the exact distance between points

• To divide the graph into quadrants

How should you scale the axes on a scatter plot?

• Using different intervals for x and y axes

• Random intervals for artistic effect

• Using logarithmic scaling

• Counting by the same amount on both axes

What does a scatter plot with hours worked and wages likely show?

• Random distribution

• Positive correlation

• Negative correlation

• No correlation