2015
Step 1 

Step 2 

Step 3 
Get Mean Scale Score from line numbers in this
data file.


Subtract 'met min'
Scale Score.
from Mean Scale Score to get
Distance From Standard


Multiply Distance From Standard by
proportion of students in grade.

Grade 
Line number 
Mean Scale Score 
 
Scale Score: met min 
= 
Distance from standard 
* 
(Students tested in grade 
/ 
Students) tested in school 
= 
Weighted Distance From Standard 
11 
124376 
0 
 
2628 
= 

* 
(2 
/ 
2) 
= 

Step 4 
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Alpine County Office of Education


2016
Step 1 

Step 2 

Step 3 
Get Mean Scale Score from line numbers in this
data file.


Subtract 'met min'
Scale Score.
from Mean Scale Score to get
Distance From Standard


Multiply Distance From Standard by
proportion of students in grade.

Grade 
Line number 
Mean Scale Score 
 
Scale Score: met min 
= 
Distance from standard 
* 
(Students tested in grade 
/ 
Students) tested in school 
= 
Weighted Distance From Standard 
11 
3492 
0 
 
2628 
= 

* 
(1 
/ 
1) 
= 

Step 4 
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Alpine County Office of Education


Last steps
Compute the average
2015 
2016 
Sum 
Average 


0.0 
0.0 
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average:
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average:
For the lines, you have the data necessary to plot the chart.