1-5: Scatter Plots Essential Question: How would you explain the process for graphing a point on a coordinate plane?

1-5: Scatter Plots  A scatter plot is a graph that relates two groups of data.  Example 1: Making a scatter plot  The table below shows data about how students did on a test and how much homework they watched the previous day. Hours watching TV Test Score

1-5: Scatter Plots  Your Turn  Use the data in the table below. Make a scatter plot of newspaper circulation and the number of households with television. Daily Circulation (millions) Households with Television (millions)

1-5: Scatter Plots  You can use scatter plots to find trends in data. There are four types of relationships two sets of data may have. When both sets of data increase together, it is considered a positive correlation When one set of data increases while the other decreases, it is called a negative correlation

1-5: Scatter Plots  You can use scatter plots to find trends in data. There are four types of relationships two sets of data may have. Sometimes, data sets are not related This is no correlation Undefined correlation occurs when one set of data shows no change

1-5: Scatter Plots  A trend line on a scatter plot can show correlations more clearly.

1-5: Scatter Plots  Example 2: The scatter plot shows the age and asking price of several used mid-sized cars. What type of relationship does the scatter plot show? a)A negative correlation b)No correlation c)An undefined correlation d)A positive correlation

1-5: Scatter Plots  Assignment  Worksheet 1-5  All problems