using excel to plot
DESCRIPTION
Using Excel to Plot. Farrokh Alemi, Ph.D. Objectives. Given a set of data plot a control chart using Excel software. Data. Observations over time (see first two columns) Upper and Lower control limits (see columns 3 and 4) Pre (yellow) & post (white) Intervention period - PowerPoint PPT PresentationTRANSCRIPT
Using Excel to Plot
Farrokh Alemi, Ph.D.
Objectives
Given a set of data plot a control chart using Excel software
Data
Observations over time (see first two columns)
Upper and Lower control limits (see columns 3 and 4)
Pre (yellow) & post (white) Intervention period
Plot a chart with three lines designating the observed, the upper and the lower limits. Distinguish between pre- and post intervention periods
TimeObserved
valueUpper limit
Lower Limit
1 30 52.5 12.5
2 0 52.5 12.5
3 25 52.5 12.5
4 30 52.5 12.5
5 35 52.5 12.5
6 40 52.5 12.5
7 50 52.5 12.5
8 45 52.5 12.5
9 31 52.5 12.5
10 20 52.5 12.5
11 40 52.5 12.5
12 60 52.5 12.5
13 45 52.5 12.5
14 60 52.5 12.5
15 45 52.5 12.5
16 32 52.5 12.5
17 50 52.5 12.5
18 60 52.5 12.5
Distinguish between before and after intervention periods
Create a series for the time period before intervention Select the range from C2 to
D8 and cut and paste it in two new columns E2 to F8.
Label E1 as upper limit before and F1 as lower limit before
Label C1 as upper limit after and D1 as lower limit after
Select chart options1. Click on chart logo
2. Select first option of line charts
3. Enter data range B2:F19 or drag cursor from B2 to F19 to pick up this range
Title, X-axis, Y-axis & legend
Enter plot title, X-axis title and Y-axis titles
Select legend folder and turn off the legend
Select plot area
Select where to make the plot
See plot. The limits are confusing and need to be redone
Example of how to plot
020
4060
80
1 3 5 7 9 11 13 15 17
Time
Ob
se
rve
d v
alu
es
Redo limits
1. Right click on the line until selected
2. Select format data series
3. Set marker to none. Set line color to red
4. Repeat for the after portion but this time set style to dashed
Redo observation line
4. Delete gridline
1. Right click on the line for observed values. Select format data series
2. Set markers to automatic, press ok
3. Click on grid line until selected
Final output
Example of how to plot
020
4060
80
1 3 5 7 9 11 13 15 17
Time
Ob
se
rve
d v
alu
es
