Exploring Scatterplots and Lines of Best Fit

The video tutorial covers scatter plots, explaining their types: positive, negative, and no correlation. It introduces the concept of a line of best fit and how to use it for prediction equations. The tutorial demonstrates graphing equations using Desmos and colored pencils to find the best fit line. It concludes with practice problems, emphasizing graphing techniques and elimination strategies.

What does a scatter plot show?

• The difference between two variables

• The average of two variables

• The relationship between two variables

• The sum of two variables

Which type of scatter plot shows dots going in an upward direction?

• Negative

• Positive

• None of the above

• No correlation

What is another term for 'no correlation' in a scatter plot?

• Negative correlation

• Positive correlation

• Zero correlation

• None

What is the purpose of a line of best fit?

• To connect all the points

• To go through the middle of most points

• To show the highest point

• To show the lowest point

What tool is recommended for graphing lines accurately?

• A highlighter

• A compass

• A ruler

• A pen

Which line color was used for Line A in the example?

• Yellow

• Green

• Blue

• Red

How do you determine if a correlation is positive or negative?

• By checking if the dots are going up or down from left to right

• By looking at the color of the dots

• By measuring the distance between dots

• By counting the number of dots

What should you do first when eliminating incorrect options?

• Graph all the lines

• Check the slope of the lines

• Count the number of points

• Measure the distance between points

What is the slope of the line in the equation y = 2x + 3?

• 1/3

• 2

• 3

• 1/2

What should you do if you need help with the practice problems?

• Guess the answers

• Ask the teacher

• Copy from a friend

• Skip the problems