This document provides instructions for organizing data in an Excel table, creating a scatter plot graph from that table, and using the graph to predict values. It describes how to: 1) Create an Excel table with an independent variable in column A and dependent variable trials in columns B-D, and add an average formula. 2) Select the independent variable and average columns to insert an XY scatter graph, apply a layout and label axes. 3) Add a trendline to the graph and use it to make forward and backward predictions by entering values. 4) Adjust the axis scales and mark the predicted length for a given time period.

1. Organizing and
Presenting Data

2. Create a table using Excel:
1. Open new document (Excel).
2. Type Title (A1).
3. Input values for independent variable
(mass, angle, length) in column A2.
4. Label columns (Time Period) for the 3
trials (Time 1, Time, 2, Time 3).
5. Enter values for all trials.
6. Set formula to get average of 3 trials.
Type: =average(then highlight data-B3:D#) Tips:
1. Merging Cells
Right click  Format cell
alignment  merge
2. Fixing average values
Right click  Format cells
7. Copy and Paste other cells
 number  Select 2
8. Edit table (center, justify, etc). decimal places
9. Set Borders

3. Create a graph using Excel:
1. Select and drag down first column (independent variable)
 click control key  select and drag down
average Time period column
2. Click Insert  Select chart 
Choose XY scatter .
3. Click Chart Layout  Select Layout 10
4. Click Axis Title, label X and Y axis
5. To delete background, left double click,
select delete.
6. Save graph or paste in a Word
document.
7. Add appropriate title to graph.

4. Using the graph to predict swing height:
1. Right click on any data point in the graph
 Select Add Trend line  Select Power.
2. Making projections: (target- 2.8 sec)
Backward forecast: enter number lower
than shortest length (9.99- this shows
curve of line from 0)
Forward forecast: Right click on trend line
 Format trend line  Options 
Forward  enter 50 or higher
3. Finding 2.8 sec (Time Period):
Left Double click anywhere on scale 
Format axis  Scale  Change major
unit (5 or 10) for X axis Change major
unit for Y axis (0.2)
4. Mark predicted length based on a 2.8
Time Period.

5. PLAYGROUND DESIGN LAB
(Swings)