November 28, scatterplots and lines of fit ink.notebook. Page 153. Page 154. Page Scatter Plots and Line of Fit.
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1 . scatterplots and lines of fit ink.notebook Page Page Page. Scatter Plots and Line of Fit Page Page 6 Page 7
2 . scatterplots and lines of fit ink.notebook Lesson Objectives Standards Lesson Notes Lesson Objectives Standards Lesson Notes. Scatter Plots and Lines of Fit S.ID.6 S.ID.6 I will make a scatter plot I will find a line of fit from a scatter plot Press the tabs to view details. Press the tabs to view details. Lesson Objectives Standards Lesson Notes S.ID.6 Represent data on two quantitative variables on a scatter plot and describe how the variables are related. a. Fit a function to the data; use functions fitted to data to solve problems in the context of the data. Use given functions or choose a function suggested by the context. Emphasize linear, quadratic, and exponential models. c. Fit a linear function for a scatter plot that suggests a linear association. My Definition: graph which sets of data are plotted as ordered pairs in a coordinate plane Example: Scatter Plot Characteristics: Used to investigate the relationship between quantities Counterexample: Press the tabs to view details. positive negative bar graph line graph
3 . scatterplots and lines of fit ink.notebook Characteristics: My Definition: Relationship between or more quantities Example: negative or Correlation The more you study, the better your grades Correlation no Negative Correlation Counterexample: You studied for a long time. (Only quantity) No Correlation Determine whether the graph shows a positive, a negative, or no. If there is a positive or negative, describe its meaning in the situation.. Negative type of Each year the average weekly work hours decrease.. Each year the hourly earnings have increased. type of correlatio
4 . scatterplots and lines of fit ink.notebook.. type Describe theof meaning Negative type o correlat The more minutes Each year the number you jog, the slower of imports from you go. Mexico increases. Writing the Equation for the Line of Fit. Make a Scatter Plot. Determine whether any relationship exists. Draw a line that seems to pass close to most of the data points. Use points ON THE LINE of fit to find the slope for the line. Use the line of fit to find the y-intercept 6. Use the line of fit to make predictions
5 . scatterplots and lines of fit ink.notebook. The table shows the number of cases of Foodborne Botulism in the United States for the years to. a) Determine what relationship exists. b) Write the slope intercept form of an equation for the line of fit. 6. The table shows the number of students per computer in Easton High School for certain school years from 996 to 8. Year Students per Computer a) Draw a scatter plot and determine what relationship exists, if any b) Draw a line of fit for the scatter plot. c) Write the slope intercept form of an equation for the line of fit. d) Predict the ratio of students per computer in. line
6 . scatterplots and lines of fit ink.notebook The table shows the price of movie admission for certain years from 999 to. 7 6 Years since 999 Admission $.8 (dollars) $.9 $.66 $.8 $6. 9 a) Draw a scatter plot and determine what relationship exists, if any. b) Draw a line of fit for the scatter plot. c) Write the slope intercept form of an equation for the line of fit. d) Predict the price in 9 On Your Whiteboards 6
7 . scatterplots and lines of fit ink.notebook a) The graph at the right shows the amount of money Carmen earned each week and the amount she deposited in her savings account that same week. Determine whether the graph shows a positive, a negative, or no. If there is a positive or negative, describe its meaning in the situation. type of b) c) The more money she earns, Describe the more the money she saves. meaning On the Worksheet Homework 7
8 . scatterplots and lines of fit ink.notebook.... The scatter plot shows the average price of a majorleague baseball ticket from 997 to 6. a) Determine what relationship, if any, exists in the data. ( or Negative ) b) Use the points (998,.6) and (, 9.) to write the slope intercept form of an equation for the line of fit shown in the scatter plot. c) Predict the price of a ticket in 9 6. Age Year a) Make a scatterplot and determine what relationship exists, if any, in the data. ( or Negative ) b) Which variable (year or age) is the independent variable? c) Draw a line of best fit for the scatterplot. d) Write an equation in slope intercept form for the line of fit. e) Predict the median age of a females first married in. 8
9 . scatterplots and lines of fit ink.notebook 7. Which equation best describes the relationship between the values of x and y in the table? Answers: a) y = x b) y = x c) y = x 7 d) y = x 7 ) none, too many varying results ) positive, The more years of formal education, the higher your salary will be. )a) positive b) y =.8x +. c).6 7) b 9
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