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 |
3 |
2242424 |
2432 |
- |
2436 |
= |
-4 |
* |
(35 |
/ |
59)
|
= |
-2.37288135 |
4 |
2242427 |
2468 |
- |
2485 |
= |
-17 |
* |
(24 |
/ |
59)
|
= |
-6.91525424 |
Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Cabrillo Elementary
|
-9 |
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 |
3 |
68833 |
2444 |
- |
2436 |
= |
8 |
* |
(19 |
/ |
46)
|
= |
3.30434782 |
4 |
68836 |
2461 |
- |
2485 |
= |
-24 |
* |
(27 |
/ |
46)
|
= |
-14.0869565 |
Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Cabrillo Elementary
|
-11 |
2017
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 |
3 |
70667 |
2431 |
- |
2436 |
= |
-5 |
* |
(30 |
/ |
47)
|
= |
-3.19148936 |
4 |
70668 |
2534 |
- |
2485 |
= |
49 |
* |
(17 |
/ |
47)
|
= |
17.72340422 |
Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Cabrillo Elementary
|
15 |
2018
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 |
3 |
70813 |
2465 |
- |
2436 |
= |
29 |
* |
(28 |
/ |
57)
|
= |
14.24561403 |
4 |
70815 |
2478 |
- |
2485 |
= |
-7 |
* |
(29 |
/ |
57)
|
= |
-3.5614035 |
Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Cabrillo Elementary
|
11 |
2019
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 |
3 |
71300 |
2411 |
- |
2436 |
= |
-25 |
* |
(23 |
/ |
46)
|
= |
-12.5 |
4 |
71301 |
2490 |
- |
2485 |
= |
5 |
* |
(23 |
/ |
46)
|
= |
2.5 |
Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Cabrillo Elementary
|
-10 |
Last steps
Compute the average
2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
-9
|
-11
|
15
|
11
|
-10
|
-4.0 |
-0.8 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 35.2
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -36.8
For the lines, you have the data necessary to plot the chart.
Very last step
The percent of students getting a Free or Reduced Price Meal comes from the following sources: