Analyze Scatterplots

What type of association does this scatter plot represent?

• positive linear association

• negative association

• no association

• nonlinear association

What is the main focus when formulating questions for scatterplots?

• Requiring the collection of data

• Collecting as much data as possible

• Acquiring existing data

The graph below shows the relationship between the distance in miles a delivery truck traveled and the number of hours each delivery took. Which of the two given points would be the best to use to calculate the line of best fit?

• (500, 11) and (700, 11)

• (300, 9) and (400, 7)

• (400, 9) and (500, 11)

• (300, 7) and (600, 10)

Chang wants to know if he is improving his skill on the cello. He created a scatter plot and drew a line of best fit. If he uses the point (2, 8) and (5, 1.5) from his line, which equation would best represent the line of best fit?

• y = -2.17x + 12.3

• y = 2.17x + 3.77

• y = -0.46x + 9

• y = -2.17x – 9.35

Jared collected data on the ages and heights of a random sample of elementary school students. If he plots the data on a scatter plot, what relationship will he most likely see between age and height?

• A negative correlation

• No correlation

• A positive correlation

• A constant correlation

The graph shows the weights of dogs and the time it took the same dogs to complete an agility course in seconds.

Which shows the line of best fit for the data?

• 
• 
• 
• 

The scatter plot shows the average yearly consumption of bottled water by people in the United States starting in 1990. Using the line of best fit, predict the average consumption of bottled water in the year 2000?

• 20 gallons

• 18 gallons

• 21 gallons

• 19 gallons

Mr. Van made a graph to represent the time his students spent studying for their test and their actual test score. Which is the correct equation for the line of best fit?

• y = 1.4x + 55

• y = 1.4x – 84

• y = 0.72x + 60

• y = 0.72 + 56

Which relationship is shown by this scatter plot?

• As the cost goes down, the number sold goes

  down.

• As the cost goes up, the number sold goes

  down.

• As the cost does down, the number sold

  remains the same.

• There is no relationship between cost and the

  number sold.

Sophia and Abigail are working on a project to analyze the relationship between the number of hours spent studying and test scores. Which type of data visualization should they use to display this relationship?

• A scatterplot is a type of data visualization that displays the relationship between two categorical variables.

• A scatterplot is a type of data visualization that displays the relationship between a numerical variable and a categorical variable.

• A scatterplot is a type of data visualization that displays the relationship between two numerical variables using a line graph.

• A scatterplot is a type of data visualization that displays the relationship between two numerical variables.