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 |
962190 |
2373 |
- |
2436 |
= |
-63 |
* |
(94 |
/ |
276)
|
= |
-21.45652173 |
| 4 |
962193 |
2413 |
- |
2485 |
= |
-72 |
* |
(88 |
/ |
276)
|
= |
-22.95652169 |
| 5 |
962194 |
2419 |
- |
2528 |
= |
-109 |
* |
(94 |
/ |
276)
|
= |
-37.12318839 |
| Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Sylmar Elementary
|
-82 |
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 |
30447 |
2414 |
- |
2436 |
= |
-22 |
* |
(81 |
/ |
254)
|
= |
-7.01574801 |
| 4 |
30449 |
2440 |
- |
2485 |
= |
-45 |
* |
(84 |
/ |
254)
|
= |
-14.88188975 |
| 5 |
30451 |
2449 |
- |
2528 |
= |
-79 |
* |
(89 |
/ |
254)
|
= |
-27.6811023 |
| Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Sylmar Elementary
|
-50 |
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 |
31012 |
2406 |
- |
2436 |
= |
-30 |
* |
(106 |
/ |
276)
|
= |
-11.52173913 |
| 4 |
31014 |
2450 |
- |
2485 |
= |
-35 |
* |
(86 |
/ |
276)
|
= |
-10.90579707 |
| 5 |
31016 |
2458 |
- |
2528 |
= |
-70 |
* |
(84 |
/ |
276)
|
= |
-21.30434782 |
| Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Sylmar Elementary
|
-44 |
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 |
31058 |
2409 |
- |
2436 |
= |
-27 |
* |
(86 |
/ |
285)
|
= |
-8.1473684 |
| 4 |
31060 |
2441 |
- |
2485 |
= |
-44 |
* |
(112 |
/ |
285)
|
= |
-17.29122806 |
| 5 |
31062 |
2452 |
- |
2528 |
= |
-76 |
* |
(87 |
/ |
285)
|
= |
-23.19999993 |
| Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Sylmar Elementary
|
-49 |
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 |
31234 |
2419 |
- |
2436 |
= |
-17 |
* |
(70 |
/ |
263)
|
= |
-4.52471482 |
| 4 |
31235 |
2446 |
- |
2485 |
= |
-39 |
* |
(85 |
/ |
263)
|
= |
-12.60456272 |
| 5 |
31236 |
2451 |
- |
2528 |
= |
-77 |
* |
(108 |
/ |
263)
|
= |
-31.6197718 |
| Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Sylmar Elementary
|
-49 |
Last steps
Compute the average
| 2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
|
-82
|
-50
|
-44
|
-49
|
-49
|
-274.0 |
-54.8 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -9.8
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -99.8
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:
