Fitting Lines to Scatter Plots

This lesson focuses on describing trends in scatter plots, emphasizing the concept of association between variables. Students learn to identify positive and negative associations and practice fitting lines to data using digital tools. The lesson includes practical exercises to reinforce understanding and concludes with a summary of key concepts.

What is the main focus of lesson five in the context of scatter plots?

• Describing trends and associations

• Finding the mode of data points

• Calculating the median of data points

• Identifying the mean of data points

In the activity 'Which one doesn't belong?', what is the primary task?

• To determine which scatter plot doesn't belong and why

• To calculate the average of all data points

• To identify the scatter plot with the highest slope

• To find the scatter plot with the most data points

What is a key characteristic of a scatter plot with a positive association?

• The line has a positive slope

• The line is vertical

• The line is horizontal

• The line has a negative slope

What tool is suggested for drawing a line to fit the data in a scatter plot?

• A calculator

• A straightedge or ruler

• A protractor

• A compass

What is the purpose of the 'blob' technique in fitting lines to scatter plots?

• To determine the mode of data points

• To identify outliers in the data

• To enclose data points and find a line of best fit

• To calculate the average of data points

What is a good indicator that a line fits a data set well?

• The line passes through the middle of the points

• The line is parallel to the x-axis

• The line is vertical

• The line is outside the data points

What should you do if a line does not fit the data well?

• Tilt the line to adjust its slope

• Make the line horizontal

• Ignore the line and move on

• Remove the line completely

How can you describe the relationship between the weight of a diamond and its price?

• There is no association

• There is a negative association

• There is a positive association

• The association is unclear

What is the association between the weight of a car and its fuel efficiency?

• Negative association

• Unclear association

• No association

• Positive association

What is the main goal of the practice problems at the end of the lesson?

• To draw random lines

• To practice fitting lines and identifying associations

• To memorize data points

• To calculate averages