2/21/22 8th SCATTER PLOTS

VOCABULARY 1. Fill in the blanks by using the correct term Scatter plot- shows a relationship between two sets of dataTrend line of best fit- used to predict direction of trend (pattern)Correlation the direction the points are going.Cluster- points that are bunched up together.Outliers- points that don't seem to fit the pattern. We don't use these points.Linear- in scatter plots, it won't be a perfect straight line. MATCHING 2. Match the scatter plots to the correct type of relationship. No Correlation Positive Correlation Negative Correlation 3. The scatter plot below shows Sara’s height and weight at various times between birth and her 3rd birthdayBased on the scatter plot, which of the following conclusions about the relationship between her height and weight is true? There is a negative correlation between height and weight There is a positive correlation between height and weight There is a constant correlation between height and weight There is no correlation between height and weight. 4. Which sentence describes the scatter plot below? As the age of the appliance increases, the cost of repairs decreases. There is no correlation between the age of the appliance and the cost of the repairs. As the age of the appliance increases, the cost of repairs remains constant. As the age of the appliance increases, the cost of repairs increases. 5. Angie is training for a big race. She runs at least a few miles almost every day of the week, but on Saturdays she always runs 10 miles. The scatter plot represents her time in minutes for each of the last 19 Saturday runs.Which of the following was most likely to have been her time in minutes for her run in Week 20? 25 45 65 85 6. The graphs below show the weights of dogs and the time it took the same dogs to complete an agility course in seconds. Which shows a correct line of best fit? 7. Look at the table below. Then, label the points on the scatter plot A, B, C, or D according to the table. There is one point that is not graphed correctly. Put an "X" as your label instead of one of the letters A-D for this point. A B X D 8. Draw a line of best fit on the scatter plot below. To find the line tool, click on the star for a drop down menu. Do your best at estimating. It does not have to be perfect. 9. Mr. Hay measured the height and arm spans of the students in his 4th period class.Based on this scatterplot, if Jonas has an arm span of 66 inches, what do you think his height would be? 60 inches 65 inches 70 inches 54 inches 10. Linear with positive correlation Linear with negative correlation Non-linear The data does not represent any association 11. Linear with positive correlation Linear with negative correlation Non-linear The data does not represent any association 12. There is no apparent correlation between the amount of hours a student sleeps and their test score. There is a negative correlation between the amount of hours a student sleeps and their test score. There is a positive correlation between the amount of hours a student sleeps and their test score. There is a constant correlation between the amount of hours a student sleeps and their test score. 13. 11 years 9 years 13 years 9.5 years 14. 105 pages 31 pages 72 pages 48 pages 15. 34 lbs 12 lbs 20 lbs 48 lbs