Upload
falala
View
15
Download
1
Embed Size (px)
DESCRIPTION
REVIEW Find the slope of the following ordered pairs. Round to 2 decimal places. (1995, 22.5) and (2011, 47.25) (13, 175) and (52, 700) Write the equation of the line given two points. (2, 1070) and (9, 4290). Warm Up Mar . 2 nd. - PowerPoint PPT Presentation
Citation preview
WARM UP MAR. 2ND REVIEW
Find the slope of the following ordered pairs. Round to 2 decimal places.
1. (1995, 22.5) and (2011, 47.25)
2. (13, 175) and (52, 700)
Write the equation of the line given two points.3. (2, 1070) and (9, 4290)
5.7 SCATTER PLOTS AND LINES OF BEST FIT•Definition: A scatter plot is a graph of ordered pairs.• They may not form a straight line, but we can
look for a pattern (correlation).•3 Types of Correlation:
ANALYZE SCATTER PLOTS•Determine whether each graph shows a positive, negative or no correlation. If there is a positive or negative correlation, describe its meaning in the situation.1. Correlation:
__________________
Meaning: ___________________________________________________________________
ANALYZE SCATTER PLOTS (CONT.)2. 3.
LINE OF BEST FIT•Definition: A line of best fit is a line that describes the trend of the data.• It tries to split the points down the middle. Also
referred to as the “best-fit line”.•Examples: Write the equation for the line of best fit.1.
LINE OF BEST FIT (CONT.)Draw a scatter plot and determine what relationship exists for the data.
Write the slope-interceptform of an equation forthe line of best fit.
YOU TRY!Use the table that shows the average body temperature in Celsius of 9 insects at a given air temperature.
Write the slope-intercept form of an equation for the line of best fit.
USING THE LINE OF BEST FIT & PREDICTIONS
Examples:1. Using the equation of the line of fit for the Bald
Eagle data, estimate the number of bald eagle pairs in 1998.
EXAMPLES (CONT.)2. Using the equation of the line of fit for the
temperature data, predict the air temperature if an insect has a body temperature of 40 degrees.
YOU TRY!The table gives the number of carbon atoms and the boiling points for several hydrocarbons.1. Write the slope-interceptform of the line of best fit.
2. Predict the boiling point forMethane (CH4) which has 1carbon atom.
3. The boiling point of heptane is 98.4 degrees. Predict the number of carbon atoms in heptane.
HOMEWORK5.7 Worksheet