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 |
2374254 |
2458 |
- |
2436 |
= |
22 |
* |
(83 |
/ |
221)
|
= |
8.26244342 |
| 4 |
2374257 |
2484 |
- |
2485 |
= |
-1 |
* |
(74 |
/ |
221)
|
= |
-0.33484163 |
| 5 |
2374258 |
2494 |
- |
2528 |
= |
-34 |
* |
(64 |
/ |
221)
|
= |
-9.84615384 |
| Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Visitacion Valley Elementary
|
-2 |
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 |
72524 |
2469 |
- |
2436 |
= |
33 |
* |
(78 |
/ |
226)
|
= |
11.38938052 |
| 4 |
72526 |
2461 |
- |
2485 |
= |
-24 |
* |
(80 |
/ |
226)
|
= |
-8.4955752 |
| 5 |
72527 |
2514 |
- |
2528 |
= |
-14 |
* |
(68 |
/ |
226)
|
= |
-4.21238937 |
| Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Visitacion Valley Elementary
|
-1 |
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 |
74498 |
2455 |
- |
2436 |
= |
19 |
* |
(71 |
/ |
207)
|
= |
6.51690821 |
| 4 |
74500 |
2489 |
- |
2485 |
= |
4 |
* |
(68 |
/ |
207)
|
= |
1.31400966 |
| 5 |
74501 |
2465 |
- |
2528 |
= |
-63 |
* |
(68 |
/ |
207)
|
= |
-20.69565215 |
| Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Visitacion Valley Elementary
|
-13 |
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 |
74672 |
2418 |
- |
2436 |
= |
-18 |
* |
(65 |
/ |
187)
|
= |
-6.25668448 |
| 4 |
74673 |
2444 |
- |
2485 |
= |
-41 |
* |
(60 |
/ |
187)
|
= |
-13.15508017 |
| 5 |
74675 |
2498 |
- |
2528 |
= |
-30 |
* |
(62 |
/ |
187)
|
= |
-9.94652406 |
| Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Visitacion Valley Elementary
|
-29 |
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 |
75197 |
2449 |
- |
2436 |
= |
13 |
* |
(55 |
/ |
162)
|
= |
4.41358024 |
| 4 |
75198 |
2451 |
- |
2485 |
= |
-34 |
* |
(54 |
/ |
162)
|
= |
-11.33333332 |
| 5 |
75199 |
2491 |
- |
2528 |
= |
-37 |
* |
(53 |
/ |
162)
|
= |
-12.10493824 |
| Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Visitacion Valley Elementary
|
-19 |
Last steps
Compute the average
| 2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
|
-2
|
-1
|
-13
|
-29
|
-19
|
-64.0 |
-12.8 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 20.2
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -45.8
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:
