To construct a line graph, which of the following should not be done? Arrange the data from least to greatest.
Number the vertical scale up to, or just past, the highest value.
Use the horizontal axis for units of time.
Add a title and label the axes.

Dana wants to identify the favorite professional baseball team of people in her community. she stands outside a local sporting goods store and asks every other person who enters, "what is your favorite professional baseball team? " will the results of her survey be valid? explain.