Birthday Graph: Analyzing A Scatter Plot
Gather data about number of students birthdays and organize as a scatter plot.
Gather data for charts and graphs to understand and interpret information across curriculum. Data samples are gathered for analysis in economics, scientific investigations, studies about various populations and interpretation of student test performance. Enable students to interpret graphs to form conclusions about any subject area. Challenge students to conduct investigations where they gather data and present findings to the class. Organize the information in charts and graphs for a conclusion based on analysis and results.
Create fun scatter plots about number of student birthdays each month to explore linear relationships and analyze results.
Supplies Used: Adhesive Letters and Numbers, Construction Paper, Glue, Black Marking Pen, Chart Paper, 1" Cartesian Graph or Grid Paper, Poster Board
The teacher will die-cut the materials for student use prior to the lesson.
- Die-cut twelve 1" Circles and the Graph using construction paper.
- Print numbers, months of the year, axis labels and title for the Graph. Be sure that the numbers and words are no more than 1" tall.
- Use a paper cutter or hand-cut the numbers, months, labels and title.
- Adhere Graph the center of a poster board or chart. Alternatively, a cartesian graph or grid paper can be used.
- Mat the title and adhere to the top of the chart.
- Adhere numbers along the vertical axis and months along the horizontal axis.
- Adhere the axis labels.
- Record the data for number of students (x) and number of months (y) on a data table. For months, understand that January equals 1, February equals 2, and so on. Use the Circles to plot the data and adhere (see Main Photo).
- Draw a best fit line to show a positive linear relationship (see Main Photo #2).
Note: Die-cut any 1" shape to plot points on the Graph. Use larger shapes with larger grid paper.
Mathematics, Grade 8: Functions
8.F.4. Construct a function to model a linear relationship between two quantities. Determine the rate of change and initial value of the function from a description of a relationship or from two (x, y) values, including reading these from a table or from a graph. Interpret the rate of change and initial value of a linear function in terms of the situation it models, and in terms of its graph or a table of values.
Mathematics, Grade 8: Statistics and Probability
8.SP.1. Construct and interpret scatter plots for bivariate measurement data to investigate patterns of association between two quantities. Describe patterns such as clustering, outliers, positive or negative association, linear association, and nonlinear association.